Tokushima University / Educator and Researcher Directory --- Takahashi, Akira

Personal Web Page

https://researchmap.jp/read0183829 (researchmap)

https://orcid.org/0000-0002-2316-4345 (ORCID)

Field of Study

○	Maxillofacial Image Diagnosis

Subject of Study

○

Book / Paper

Academic Paper (Judged Full Paper):

1.	Akira Takahashi, Kumiko Kamada, Naoyuki Fukuda, Keiko Kudoh, Natsumi Takamaru, Naito Kurio, Chieko Sugawara and Youji Miyamoto : Analysis of the sublingual artery using contrast-enhanced computed tomography, Clinical Implant Dentistry and Related Research, Vol.25, No.3, 532-539, 2023. (Summary) This in vivo study aimed to clarify the position of the sublingual artery (SLA) relative to the mandibular bone and to infer the potential risk for injury during dental implant surgery. Contrast-enhanced computed tomography images of the mouth of 50 edentulous patients (100 sides) treated at Tokushima University Hospital were reviewed. Curved planar reconstructed images perpendicular to the alveolar ridge were processed and classified into molar, premolar, canine, and incisor regions. The SLA and its branches were identified, and the distance from the mandible to the SLA was measured. The SLA was located close to the mandible (<2 mm) in the molar, premolar, canine, and incisor segments in 12.0% (95% confidence interval 5.6%-18.4%), 20.6% (12.6%-28.7%), 30.5% (21.3%-39.8%), and 41.8% (28.8%-54.9%) cases, respectively. The SLA was located within ±3 mm craniocaudally to the upper wall of the mandibular canal in the molar and premolar regions in 50% of cases and within ±5 mm craniocaudally to the mylohyoid ridge in the canine and incisor regions in the other cases, with no sex or age-related differences. The vertical distance from the alveolar ridge to the SLA was influenced by sex and age owing to alveolar resorption, indicating that the alveolar ridge is not a reliable reference for predicting SLA position. As the risk of SLA injury always exist during dental implant placement and there is no way to confirm the SLA pathways in a patient, clinicians must avoid injuring the sublingual soft tissue. (Keyword) Dental Implants / Mandible / Alveolar Process / Tomography, X-Ray Computed / Cone-Beam Computed Tomography / Arteries (Link to Publication Site) ● Publication site (DOI): 10.1111/cid.13197 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36896477 ● Search Scopus @ Elsevier (PMID): 36896477 ● Search Scopus @ Elsevier (DOI): 10.1111/cid.13197 (DOI: 10.1111/cid.13197, PubMed: 36896477)
2.	Keiko Kudoh, Go Ohe, Natsumi Takamaru, Kazuya Akita, Takaharu Kudoh, Akira Takahashi and Youji Miyamoto : Computed tomography-based morphological analysis for intraoral vertical ramus osteotomy in patients with mandibular prognathism, Oral Science International, Vol.21, No.1, 37-45, 2023. (Link to Publication Site) ● Publication site (DOI): 10.1002/osi2.1176 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1002/osi2.1176 (DOI: 10.1002/osi2.1176)
3.	Takaharu Kudoh, Akihiro Haga, Keiko Kudoh, Akira Takahashi, Motoharu Sasaki, Yasusei Kudo, Hitoshi Ikushima and Youji Miyamoto : Radiomics analysis of [18F]-fluoro-2-deoxyglucose positron emission tomography for the prediction of cervical lymph node metastasis in tongue squamous cell carcinoma, Oral Radiology, 2022. (Summary) This study aimed to create a predictive model for cervical lymph node metastasis (CLNM) in patients with tongue squamous cell carcinoma (SCC) based on radiomics features detected by [F]-fluoro-2-deoxyglucose (F-FDG) positron emission tomography (PET). A total of 40 patients with tongue SCC who underwent F-FDG PET imaging during their first medical examination were enrolled. During the follow-up period (mean 28 months), 20 patients had CLNM, including six with late CLNM, whereas the remaining 20 patients did not have CLNM. Radiomics features were extracted from F-FDG PET images of all patients irrespective of metal artifact, and clinicopathological factors were obtained from the medical records. Late CLNM was defined as the CLNM that occurred after major treatment. The least absolute shrinkage and selection operator (LASSO) model was used for radiomics feature selection and sequential data fitting. The receiver operating characteristic curve analysis was used to assess the predictive performance of the F-FDG PET-based model and clinicopathological factors model (CFM) for CLNM. Six radiomics features were selected from LASSO analysis. The average values of the area under the curve (AUC), accuracy, sensitivity, and specificity of radiomics analysis for predicting CLNM from F-FDG PET images were 0.79, 0.68, 0.65, and 0.70, respectively. In contrast, those of the CFM were 0.54, 0.60, 0.60, and 0.60, respectively. The F-FDG PET-based model showed significantly higher AUC than that of the CFM. The F-FDG PET-based model has better potential for diagnosing CLNM and predicting late CLNM in patients with tongue SCC than the CFM. (Tokushima University Institutional Repository) ● Metadata: 116770 (Link to Publication Site) ● Publication site (DOI): 10.1007/s11282-022-00600-7 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35254609 ● Summary page in Scopus @ Elsevier: 2-s2.0-85125757133 (Tokushima University Institutional Repository: 116770, DOI: 10.1007/s11282-022-00600-7, PubMed: 35254609, Elsevier: Scopus)
4.	Akira Takahashi, Kumiko Kamada, Keiko Kudoh, Takaharu Kudoh, Natsumi Takamaru, Naito Kurio, Chieko Sugawara and Youji Miyamoto : Evaluation of anatomical references for locating the course of the posterior superior alveolar artery for dental implant surgery, International Journal of Oral and Maxillofacial Surgery, Vol.51, No.2, 257-262, 2021. (Summary) This retrospective cohort study aimed to identify the best anatomical reference for predicting the posterior superior alveolar artery (PSAA) location. Computed tomographic images of 90 maxillary sinuses were evaluated. We studied five references, including the alveolar crest, maxillary sinus floor, zygomatoalveolar crest, hard palate and soft palate, and measured the distances between them and the PSAA. Variations in the distance were evaluated by the standard deviation and coefficient of variation (CV). The zygomatoalveolar crest was an unstable reference, owing to its high standard deviation and CV. The smallest CV was for the distance between the alveolar crest and PSAA, although the distance was smaller in edentulous jaws than dentulous jaws. The distance between the sinus floor and PSAA was larger in male and edentulous patients. The PSAA was detected in 40.0%, 44.4%, 54.4% and 56.7% of the sinus walls at the first and second premolar and the first and second molar positions, respectively. At these tooth positions, the respective heights above the hard palate were 11.2 ± 4.9, 8.2 ± 4.9, 6.2 ± 2.8 and 8.1 ± 2.9 mm. The hard palate was the most stable reference for predicting the location of the PSAA, irrespective of sex, age and dentition. (Keyword) Arteries / Cone-Beam Computed Tomography / Dental Implants / Humans / Male / Maxillary Sinus / Retrospective Studies / Sinus Floor Augmentation (Link to Publication Site) ● Publication site (DOI): 10.1016/j.ijom.2021.05.013 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 34083086 ● Summary page in Scopus @ Elsevier: 2-s2.0-85107155071 (DOI: 10.1016/j.ijom.2021.05.013, PubMed: 34083086, Elsevier: Scopus)
5.	Takaharu Kudoh, Akira Takahashi, Keiko Kudoh and Youji Miyamoto : 強度変調放射線治療に伴う放射線性顎骨壊死の頻度と危険因子の検討, Dental Radiology, Vol.60, No.1, 17-20, 2020. (Tokushima University Institutional Repository) ● Metadata: 115355 (Link to Publication Site) ● Publication site (DOI): 10.11242/dentalradiology.60.17 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.11242/dentalradiology.60.17 (Tokushima University Institutional Repository: 115355, DOI: 10.11242/dentalradiology.60.17)
6.	Akira Takahashi : Radiopacities in Periapical and Panoramic Radiographs, Journal of Oral Health and Biosciences, Vol.31, No.1, 57-61, 2018. (Keyword) panoramic radiography / periapical radiography / radiopacity / cemento-osseous dysplasia / tonsil / calculi (Tokushima University Institutional Repository) ● Metadata: 111939 (Link to Publication Site) ● Publication site (DOI): 10.20738/johb.31.1_57 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001288042884864 ● Search Scopus @ Elsevier (DOI): 10.20738/johb.31.1_57 (Tokushima University Institutional Repository: 111939, DOI: 10.20738/johb.31.1_57, CiNii: 1390001288042884864)
7.	Akira Takahashi, Chieko Sugawara, Kazuya Akita, Kumiko Kamada, Keiko Kudoh, Tetsuya Tamatani and Youji Miyamoto : Prevalence and imaging characteristics of nasopharyngeal and eustachian tube tonsilloliths in 2244 patients determined using computed tomography, Dento Maxillo Facial Radiology, Vol.47, 20180052, 2018. (Summary) Nasopharyngeal tonsilloliths (NT) and eustachian tube tonsilloliths (ET) are not as well-known to radiologists as palatine and lingual tonsilloliths. The aim of this investigation was to determine the prevalence and imaging characteristics of NT and ET using CT and panoramic radiographs. We retrospectively assessed the scans of 2244 patients who underwent consecutive CT and panoramic radiographs of the maxillofacial region. The prevalence, size, number, and position of NT and ET were analysed. NT and ET were detected in 14 (0.6%) and 6 (0.3%) of 2244 patients on CT, respectively, but they were undetectable on panoramic radiographs. No significant difference was found in the prevalence with respect to sex. Although there was also no significant difference in the prevalence among age groups, tonsilloliths were most commonly noted in patients over 40 years old; they appeared as small and round calcified bodies, ranging from 1 to 3 mm in diameter. All NT were found 0 to 3 mm beneath the nasopharyngeal mucosal surface. The prevalence of NT and ET on CT was lower than that of palatine and lingual tonsilloliths. However, since they are encountered more frequently than clinically significant calcifying diseases such as retropharyngeal calcific tendinitis, clinicians should be able to correctly diagnose NT and ET based on their anatomical features. (Keyword) nasopharynx / eustachian tube / tonsil / calculi / computed tomography / X-Ray (Tokushima University Institutional Repository) ● Metadata: 113564 (Link to Publication Site) ● Publication site (DOI): 10.1259/dmfr.20180052 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29714075 ● Search Scopus @ Elsevier (PMID): 29714075 ● Search Scopus @ Elsevier (DOI): 10.1259/dmfr.20180052 (Tokushima University Institutional Repository: 113564, DOI: 10.1259/dmfr.20180052, PubMed: 29714075)
8.	Akira Takahashi, Chieko Sugawara, Keiko Kudoh, Yoshiko Yamamura, Go Ohe, Tetsuya Tamatani and Youji Miyamoto : Lingual tonsillolith: prevalence and imaging characteristics evaluated on 2244 pairs of panoramic radiographs and CT images, Dento Maxillo Facial Radiology, Vol.47, No.1, 20170251, 2018. (Summary) Lingual tonsilloliths are not as well-known to radiologists than palatine tonsilloliths, although they might be common in clinical practice. The aim of this investigation was to clarify the prevalence and imaging characteristics of lingual tonsilloliths using panoramic radiographs and CT images. This study included 2244 patients without pathology at the base of tongue who had undergone panoramic radiography and CT of the maxillofacial region. The size, number and position of lingual tonsilloliths relative to the mandible and tongue were evaluated. Lingual tonsilloliths were observed in 33 (1.5%) and 108 (4.8%) of all patients on panoramic radiographs and CT images, respectively. The prevalence was higher in patients aged ≥40 years than in those aged < 40 years (χ, p < 0.01). They appeared as small, round- or rod-shaped calcified bodies, and they always located closely anterior (1-17 mm) to the anterior border of oropharyngeal airway on panoramic radiographs. Lingual tonsilloliths were superimposed over the surrounding soft tissue inferior to the body of the mandible, posteroinferior to the angle of the mandible and posterior to the mandible in 16 (48.5%), 15 (45.5%) and 1 (3.0%) individual, respectively. A significant correlation was observed between the detectability on panoramic radiographs and size (Spearman's r = 0.961, p < 0.01) of tonsilloliths, as revealed by CT images. Lingual tonsilloliths commonly appear on CT. They also appear on panoramic radiography and may superimpose the surrounding soft tissue of the mandible. Although lingual tonsilloliths may resemble other pathological calcifications including submandibular sialoliths and lingual osseous cholistoma, they can be differentiated by carefully observing panoramic radiographs. When clinicians detect calcified bodies near the base of tongue, lingual tonsilloliths should be included in the differential diagnoses. (Keyword) panoramic radiography / X Ray Computed tomography / tonsil / tongue / calculi (Tokushima University Institutional Repository) ● Metadata: 113565 (Link to Publication Site) ● Publication site (DOI): 10.1259/dmfr.20170251 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28937280 ● Summary page in Scopus @ Elsevier: 2-s2.0-85040003219 (Tokushima University Institutional Repository: 113565, DOI: 10.1259/dmfr.20170251, PubMed: 28937280, Elsevier: Scopus)
9.	Keiko Kudoh, Kumiko Kamada, Natsumi Takamaru, Yoshiko Yamamura, Go Ohe, Takaharu Kudoh, Akira Takahashi, Tetsuya Tamatani, Kenji Fujisawa and Youji Miyamoto : 徳島県における口腔がん検診の現状, 日本歯科人間ドック学会誌, Vol.12, No.1, 21-25, 2017.
10.	Akira Takahashi, Chieko Sugawara, Takaharu Kudoh, Go Ohe, Natsumi Takamaru, Tetsuya Tamatani, Hirokazu Nagai and Youji Miyamoto : Prevalence and imaging characteristics of palatine tonsilloliths evaluated on 2244 pairs of panoramic radiographs and CT images., Clinical Oral Investigations, Vol.21, No.1, 85-91, 2017. (Summary) Palatine tonsilloliths incidentally detected on diagnostic imaging should be differentiated from pathologic calcifications to enable correct diagnosis and treatment. The aim of this study is to clarify the prevalence and imaging characteristics of palatine tonsilloliths on panoramic radiographs. We retrospectively reviewed 2244 individuals who underwent pairs of consecutive panoramic radiography and computed tomography (CT) of the head and neck region. The imaging characteristics of palatine tonsilloliths on panoramic radiography were compared with the findings from CT, which was considered the gold standard. Tonsilloliths were detected in 300 (13.4 %) and 914 (40.7 %) of the 2244 individuals on panoramic radiographs and CT, respectively. On panoramic radiographs, tonsilloliths were superimposed over the ramus of the mandible at the level coincident with and inferior to the soft palate in 176 (7.8 %) and 90 (4.0 %) individuals, respectively. Tonsilloliths were also superimposed over the surrounding soft tissue inferior to the body of the mandible, postero-inferior to the angle of the mandible, and posterior to the ramus of the mandible in 33 (1.5 %), 26 (1.2 %), and 28 (1.3 %) individuals, respectively. A significant correlation was observed between the detectability on panoramic radiographs and the size (Spearman r = 1.000) and number (Spearman r = 0.991) of tonsilloliths, as revealed by CT images. The present results suggest that tonsilloliths are commonly detected on panoramic radiographs. Furthermore, they can be superimposed on both the mandible and the surrounding soft tissue. Clinicians should include tonsilloliths among the differential diagnoses when calcified bodies are detected on panoramic radiographs. (Tokushima University Institutional Repository) ● Metadata: 113566 (Link to Publication Site) ● Publication site (DOI): 10.1007/s00784-016-1752-0 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26892471 ● Search Scopus @ Elsevier (PMID): 26892471 ● Search Scopus @ Elsevier (DOI): 10.1007/s00784-016-1752-0 (Tokushima University Institutional Repository: 113566, DOI: 10.1007/s00784-016-1752-0, PubMed: 26892471)
11.	Yoshiko Yamamura, Kenji Fujisawa, 鎌田久美子, Natsumi Takamaru, Keiko Kudoh, Go Ohe, Takaharu Kudoh, Akira Takahashi, Tetsuya Tamatani, Hirokazu Nagai and Youji Miyamoto : 口腔がん患者の歯科疾患罹患状況, 日本歯科人間ドック学会誌, Vol.11, No.1, 29-32, 2016.
12.	Chieko Sugawara, Akira Takahashi, Fumiaki Kawano, Yasusei Kudo, Naozumi Ishimaru and Youji Miyamoto : Intraoral Ultrasonography of Tongue Mass Lesions, Dento Maxillo Facial Radiology, Vol.45, No.5, 20150362, 2016. (Summary) To demonstrate the usefulness of intraoral ultrasonography (IOUS) for tongue mass lesions, we analyzed surgery cases excluding squamous-cell carcinoma and leukoplakia and compared IOUS and pathological findings. We used the hospital information system and Radiology Information System to evaluate the IOUS and pathological findings of patients who underwent surgeries for tongue masses in the past 11 years. Surgeries for the tongues were performed in 268 cases. Imaging examinations were carried out in 52 (19.4%) cases including 42 (15.7%) cases by IOUS. The pathological results of the surgeries were as follows: 36 cases were inflammatory lesions, 74 cases were tumours, 131 cases were hyperplasia, 8 cases were cystic lesions and 19 cases were other miscellaneous lesions. On the other hand, the number of patients who received IOUS in the same period was 87, and 42 of them had surgeries. In 32 out of the 42 (76.2%) cases, pre-operative IOUS features matched with pathological results. Most of the haemangiomas and lipomas could be diagnosed by IOUS alone. IOUS of the tongue revealed the nature of the lesions including the border, size, location, depth, the presence or absence of a capsule and the internal structure including vascularity of the mass. The ultrasonographic findings well reflected the histological findings. IOUS is a simple and useful technique that provides additional information beyond inspection, clarifying the internal structure, blood flow and relationships with the adjacent tissues. In this article, we indicated 11 representative cases (fibrous polyp, haemangioma, pyogenic granuloma, lipoma, liposarcoma, chondroma, lymphangioma, schwannoma, neurofibroma, pleomorphic adenoma and amyloidosis) to show the usefulness of IOUS. (Keyword) ultrasound (Tokushima University Institutional Repository) ● Metadata: 111906 (Link to Publication Site) ● Publication site (DOI): 10.1259/dmfr.20150362 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26915405 ● Search Scopus @ Elsevier (PMID): 26915405 ● Search Scopus @ Elsevier (DOI): 10.1259/dmfr.20150362 (Tokushima University Institutional Repository: 111906, DOI: 10.1259/dmfr.20150362, PubMed: 26915405)
13.	Tsuyoshi Honda, Keiko Fujimoto, Takuro Baba, Kan Nagao, Akira Takahashi and Tetsuo Ichikawa : Swallowing sound waveform and its clinical significance: Evaluation using ultrasonography, Journal of Oral Health and Biosciences, Vol.28, No.1, 21-27, 2015. (Summary) Background: Cervical auscultation is a technique frequently used for the screening of dysphagia. However, this method is difficult to evaluate objectively and it is unclear how sound is generated during the swallowing process. The aim of this study was to analyze the waveform of swallowing sound and clarify the sound production process using recordings of swallowing sounds and ultrasound images (USI), performed simultaneously.Materials and Methods: Commercial natural spring water and natural carbonated water were used in experiments 1 and 2, respectively. In experiment 1, a microphone was attached to the skin of the neck of 20 young participants and swallowing sounds were recorded and analyzed. In experiment 2, swallowing processes in three participants were recorded by a medical ultrasonography apparatus. The ultrasonic probe was placed on the skin over one of the thyroid cartilages or the thyroid gland.Results: The swallowing sound wave (SSW) was divided into three sectional periods. The mean duration of the first, second, and third SSW was 210 ± 147 ms, 458 ± 113 ms, and 91 ± 61 ms, respectively. The mean intensity ratio of the first, second, and third SSW was 7.8 ± 5.2, 29.2 ± 16.5,and 5.8 ± 5.1, respectively. When the ultrasonic probe was placed on the skin over one of the thyroid cartilages, in the phase between the production of the second SSW and the silent period, the USI revealed an accumulation of swallowed material around the valleculae and oropharynx. In the silent period of the second SSW, the swallowed material accumulated around the hypopharynx. When the ultrasonic probe was placed on the skin over the thyroid gland, in the silent period of the second SSW, the USI revealed that the swallowed material had passed through esophagus.Conclusion: Waveform and USI findings from this study suggest that swallowing sound can be divided into three sectional periods: an oral phase, a pharyngeal phase, and a repositioning phase. (Keyword) Dysphagia / Swallowing sound / Ultrasonography (Tokushima University Institutional Repository) ● Metadata: 109865 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520854805705094272 (Tokushima University Institutional Repository: 109865, CiNii: 1520854805705094272)
14.	Chieko Sugawara, Akira Takahashi, Fumiaki Kawano, Takaharu Kudoh, Akiko Yamada, Naozumi Ishimaru, Hara Kanae and Youji Miyamoto : Neuroendocrine tumor in the mandible: a case report with imaging and histopathologic findings, Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, Vol.119, No.1, e41-e48, 2015. (Summary) Neuroendocrine tumors (NETs) arise from neuroendocrine cells and are mostly observed in the gastrointestinal tract, pancreas, and lungs. NETs in the oral and maxillofacial region are extremely rare. We report a case of a 59-year-old woman with an NET in the mandible. The patient did not show any symptoms except for remarkable swelling and bleeding. The lesion appeared as a radiolucent honeycomb abnormality with bone destruction on panoramic radiography. The histopathologic diagnosis following a biopsy was NET. Contrast-enhanced computed tomography (CT), (18)F-fluorodeoxyglucose positron emission computed tomography ((18)F-FDG PET/CT), and adrenal scintigraphy-labeled meta-iodobenylguanidine were the modalities added to identify the primary site. Multiple lesions were confirmed in the gastrointestinal tract. Endoscopy was performed to identify the lesions, and several lesions were observed protruding from the mucous membranes. However, the endoscopy specimens did not yield an accurate diagnosis because adequate samples were not acquired. Blood and urine tests revealed no functional activity caused by the tumors. Although the origin was not histopathologically confirmed with endoscopy, this patient was situationally diagnosed with nonfunctional NET originating from the duodenum, as demonstrated by the metastases in the mandible. (Keyword) neuroendocrine tumor / neuroendocrine carcinoma / oral cavity / synaptophysin / chromogranin A (Link to Publication Site) ● Publication site (DOI): 10.1016/j.oooo.2014.09.024 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 25459356 ● Summary page in Scopus @ Elsevier: 2-s2.0-84915767535 (DOI: 10.1016/j.oooo.2014.09.024, PubMed: 25459356, Elsevier: Scopus)
15.	Akira Takahashi, Chieko Sugawara, Takaharu Kudoh, Daisuke Uchida, Tetsuya Tamatani, Hirokazu Nagai and Youji Miyamoto : Prevalence and Imaging Characteristics of Palatine Tonsilloloths Detected by CT in 2,873 Consecutive Patients, The Scientific World Journal, 2014. (Tokushima University Institutional Repository) ● Metadata: 113567 (Link to Publication Site) ● Publication site (DOI): 10.1155/2014/940960 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 25389536 ● Summary page in Scopus @ Elsevier: 2-s2.0-84908347485 (Tokushima University Institutional Repository: 113567, DOI: 10.1155/2014/940960, PubMed: 25389536, Elsevier: Scopus)
16.	Chieko Sugawara, Akira Takahashi, Michiko Kubo, Hideki Otsuka, Naozumi Ishimaru, Youji Miyamoto and Eiichi Honda : Preoperative evaluation of patients with squamous cell carcinoma of the oral cavity: fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography and ultrasonography versus histopathology., Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, Vol.114, No.4, 516-525, 2012. (Summary) PET/CT and US are complementary tools to evaluate preoperative patients. (Link to Publication Site) ● Publication site (DOI): 10.1016/j.oooo.2012.06.004 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22986248 ● Search Scopus @ Elsevier (PMID): 22986248 ● Search Scopus @ Elsevier (DOI): 10.1016/j.oooo.2012.06.004 (DOI: 10.1016/j.oooo.2012.06.004, PubMed: 22986248)
17.	Chieko Sugawara and Akira Takahashi : Mechanical and Clinical Performance of Pulse-Inversion Tissue Harmonic Imaging in Superficial Region, Journal of Medical Ultrasonics, Vol.37, No.3, 107-115, 2010. (Keyword) Tissue harmonic image, Pulse inversion, Image quality, Contrast resolution (Link to Publication Site) ● Publication site (DOI): 10.1007/s10396-010-0258-7 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1573950400964969344 ● Search Scopus @ Elsevier (DOI): 10.1007/s10396-010-0258-7 (DOI: 10.1007/s10396-010-0258-7, CiNii: 1573950400964969344)
18.	Akira Takahashi and Chieko Sugawara : Evaluation of the Field of View in Maxillofacial Ultrasonography, Shikoku Dental Research, Vol.20, No.1, 181-187, 2007. (Summary) The purpose of this study was to compare the advantages of different fields of view (FOV) between Linear, Sector, and real-time panoramic view (SieScape^TM) in B-mode ultrasonography for the maxillofacial region. <Materials and methods> This prospective study included 103 maxillofacial examinations of 60 patients with space-occupying lesions and/or suspected of metastatic regional lymph nodes from oral cancer. These lesions were examined by ultrasonographic study with three different kinds of FOV, including Linear, Sector, and SieScape^<TM>. These images were digitally recorded and compared. Each examination was classified into 5 maxillofacial anatomical parts, 1) buccal & lip part, 2) parotid gland part, 3) submandibular part, 4) submental & sublingual part, and 5) neck part. The advantage of FOV was evaluated according to these anatomical parts. <Results> 1) Buccal & lip part: 16 examinations were collected. Linear and/or sector FOV provided sufficient images for observing the lesion and adjoining anatomical landmarks. 2) Parotid gland part: 7 examinations were obtained. The whole gland could be observed only in SieScape^<TM> in a single image. 3) Submandibular part: 43 examinations were obtained. The whole submandibular gland could be observed in Sector FOV, which was also useful to observe the structure adjoining the mandible, because the slanting ultrasound beam avoided the lingual mandibular bone and the deeper structure of the gland could be observed. Furthermore, for cases with many submandibular lymph nodes, sagittal SieScape^<TM> images provided a suitable reference image for later observation. 4) Submental & sublingual part: Linear FOV provided sufficient images. Sector FOV was also useful, if the lesion was large or located next to the mandible. 5) Neck part: The quality of diagnostic information did not differ between the three kinds of FOVs employed here, since this area was too large to observe in a single image. Furthermore, the exact location was hard to identify in the later evaluation since the anatomic structures did not much differ between upper and middle neck portions. <Conclusion> In the ultrasonographic examination of the maxillofacial area, we should select proper FOV to obtain useful diagnostic information. (Keyword) 超音波画像 / 視野 / 画像診断 (Tokushima University Institutional Repository) ● Metadata: 318 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050865122808430720 (Tokushima University Institutional Repository: 318, CiNii: 1050865122808430720)
19.	Akira Takahashi, Chieko Sugawara, Michiko Kubo, Naoki Maeda and Hidehiko Hosoki : Sonographic Appearance of Mucus Cysts of the Lip, Shikoku Dental Research, Vol.20, No.1, 177-180, 2007. (Summary) The ultrasonographic features of 12 histologically proven mucus cysts in the lip were reported. All mucus cysts were of submucosal mass with a smooth border. Ten of 12 cysts contained an anechoic area. Among the 12, 11 had an adjacent hypoechoic zone with blood flow. There were reactive sclerotic or edematous changes outside the cyst wall, caused by the partial extravasation of saliva. This finding was exclusively observed in mucus cysts and would help in differential diagnosis, because most of the cysts with extravasation were difficult to distinguish from solid tumor by physical examination alone. (Keyword) 頭頸部超音波画像 / 口唇 / 粘液嚢胞 / 表在腫瘤 (Tokushima University Institutional Repository) ● Metadata: 317 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050020697878299904 (Tokushima University Institutional Repository: 317, CiNii: 1050020697878299904)
20.	Akira Takahashi, Chieko Sugawara, Naoki Maeda and Hidehiko Hosoki : The Utility of Three Dimensional Ultrasonographic Imaging for Detecting the Cervical Lymph Node Metastasis with Oral Cancer, Shikoku Dental Research, Vol.19, No.2, 247-253, 2007. (Summary) Three dimensional ultrasonographic imaging was performed for the cervical lymphadenopathy. Forty lymph nodes with suspicion of metastatic lymphadenopathy out of 20 patients with oral cancers were served for the present study. We could not judge the presence/absence of the metastasis by routine B mode or power Doppler imaging alone. Out of the 40 lymph nodes, 18 metastatic lymphadenopathies were proved histopathologically. Additionally, 11 lymph nodes out of 8 patients with nonspecific reactive lymphadenopathies were included as the control. The pattern of the circumferential blood flow of the lymph nodes was reviewed by the three-dimensional maximum intensity projection (3D MIP) view that was obtained from 3D power Doppler imaging. They were divided into 4 categories ; linear blood flow, mesh like blood flow, spotty blood flow and no circumferential flow. The spotty flow was almost exclusively found in the metastatic lymph nodes. Its accuracy, sensitivity and specificity, positive predictive value and negative predictive value for detecting metastatic lymphadenopathy were 0.73, 0.44, 0.95, 0.89, and 0.68, respectively. This spotty flow was situated at the marginal portion and/or around the lymph nodes by the analysis of the two-dimensional display. We could not differentiate whether it was arterial or venous flow. As the three dimensional sonographic imaging is the time-consuming technique compared to the routine B mode or power Doppler imaging, we cannot routinely perform it. However, it would play a supplementary role for detecting lymph node metastasis, especially if we cannot judge them by the two dimensional imaging alone. (Keyword) 頭頸部悪性腫瘍 / 頸部 / リンパ節 / ultrasound / diagnostic imaging (Tokushima University Institutional Repository) ● Metadata: 293 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050020697878312704 (Tokushima University Institutional Repository: 293, CiNii: 1050020697878312704)
21.	Akira Takahashi, Naoki Maeda, Chieko Sugawara, Takaharu Kudoh, Michiko Kubo, Hidehiko Hosoki and Hirokazu Iwasaki : Significance of Abdominal CT Examination for the Screening of Distant Metastasis of the Orofacial Malignancies, Shikoku Dental Research, Vol.19, No.2, 239-246, 2007. (Summary) Abdominal CT examinations for the scouting of distant metastasis (DM) of orofacial malignant tumors were retrospectively evaluated, for the purpose of establishing the standard way of examination. Out of 159 patients with oral malignancies, 247 abdominal CT examinations were performed for the purpose of scouting DM. During the examination, intravenous contrast enhancement (CE) was performed in 166 examinations. DM were detected in 13 patients (8.2%). DM were found in 6 at administration, and 8 were late DM. Nine DM were detected out of 166 (5.4%) examinations with CE, and 5 were detected out of 81 (6.2%) examinations without CE. In detecting the DM, no improvement was found by CE. DM attacked lungs in 13, mediastinum in 3, liver in 2, paraaortic lymph nodes in 1, chest wall in 1, and vertebra in 1. Only 2 patients with DM were free from cervical metastasis, and the remainder was combined with cervical metastasis, regardless the status of the primary sites. Conclusions: Abdominal CT was useful for detecting DM. Intravenous CE was not necessary for scouting the DM. Patients with cervical metastasis had a high potential for developing DM. (Keyword) 頭頸部悪性腫瘍 / metastasis / CT / diagnostic imaging (Tokushima University Institutional Repository) ● Metadata: 292 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050865122808443520 (Tokushima University Institutional Repository: 292, CiNii: 1050865122808443520)
22.	Chieko Sugawara, Akira Takahashi, Naoki Maeda, Michiko Kubo, Takaharu Kudoh, Hidehiko Hosoki and Hirokazu Iwasaki : An Investigation of Accidental Aspiration and Swallowing during the Dental Treatment at Tokushima University Hospital, Shikoku Dental Research, Vol.19, No.2, 255-262, 2007. (Summary) When an accident of aspiration or swallowing occurs during dental treatment, the patient would fall into severe clinical condition such as pneumonia, peritonitis, sepsis, and even death, unless a dentist immediately judges the patient's situation. As most dental material is radiopaque, radiography of a chest or an abdomen allows to see the accidental materials. From 1995 to 2002, 35 radiographic examinations were performed after the accidents at Tokushima University Dental Hospirtal. Mean of accidents was 4.4 cases a year. The incidence was 0.004% in the cumulative numbers of dental examinations. The location of accidental material on the radiography was clearly observed in 18 among 35 cases. Radiography of multiple times was performed 13 in 18 cases in order to confirm the excretion. In 5 cases, accidental materials were not confirmed to excrete. Furthermore, there were many cases in which clinical records about accidents were not described. Present findings indicate that it is necessary to detect precisely the location of accidental materials and that radiographic detection is very important. (Keyword) 誤嚥 / 誤飲 / 医療事故 (Tokushima University Institutional Repository) ● Metadata: 294 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050020697878310912 (Tokushima University Institutional Repository: 294, CiNii: 1050020697878310912)
23.	Maki Hosoki, Toyoko Satsuma, Akira Takahashi, Keisuke Nishigawa, Hidehiko Hosoki, Masanori Nakano, Eiichi Bando, Hisahiro Takeuchi, Chieko Sugawara and Hirokazu Iwasaki : スパイラルCTを用いた顎関節の三次元評価法, Shikoku Dental Research, Vol.19, No.2, 231-238, 2007. (Summary) Three-dimensional (3-D) image reconstructed from Computed Tomography (CT) data is an ef>cient method to evaluate temporomandibular joint (TMJ) morphologically. Even the 3-D image reconstructed from spiral CT data has some distortion, typically along to the table feed direction, very few studies were reported about accuracy of reconstructed 3-D image size. The purpose of this research was to evaluate the distortion on 3-D image reconstructed with spiral CT (Somatom Plas4, Siemens Co, Germany) quantitatively. We used three imaging targets, eight ceramic balls placed at corners of cubic frame, a calibration cube that has the CT value nearly equal to cortex bone of human dried mandibular head. We evaluated relation between a threshold level of CT image processing and reconstructed 3-D image size with a custom-made computer program. CT data of ceramic balls clari>ed changes of the reconstructed image, -0.215mm for table feed direction and less than ±0.006mm for the other directions. The calibration cube was used for the arrangement of optimal scanning condition (reconstruction mode, collimation, reconstitution interval) and evaluation of reconstructed image size. The distortion of the image was +0.207mm for table feed direction and less than +0.029mm for the other directions. Changes of dried skull TMJ image reconstructed with the optimal scanning condition were -1.463mm for lateral direction of the condylar head, -0.956mm for back and forth direction and -0.580mm for table feed direction. Results of this research suggested that the level of the 3-D image distortion was mostly affected with the scanning condition. And the size of 3-D image was susceptible to the threshold level of CT image processing. Consequently, we think that the standardization of scanning condition should be concerned for the quantitative evaluation of 3-D TMJ image using CT data. (Keyword) temporomandibular joint / spiral CT / 三次元評価 (Tokushima University Institutional Repository) ● Metadata: 291 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050865122808445312 (Tokushima University Institutional Repository: 291, CiNii: 1050865122808445312)
24.	Akira Takahashi, Chieko Sugawara, 上村修三郎 and 春名芳郎 : Evaluation of spatial resolution for high-frequency multidimensional array probe in ultrasound imaging., Dental Radiology, Vol.42, No.3, 192-200, 2002. (Keyword) Ultrasound imaging / Probe / Spatial resolution (Link to Publication Site) ● Publication site (DOI): 10.11242/dentalradiology1960.42.192 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679939212544 ● Search Scopus @ Elsevier (DOI): 10.11242/dentalradiology1960.42.192 (DOI: 10.11242/dentalradiology1960.42.192, CiNii: 1390282679939212544)
25.	Akira Takahashi, Shimomura Manabu, Chieko Sugawara and Uemura Shusaburo : Nontraumatic pseudoaneurysm of the lingual artery/ A case report, Dental Radiology, Vol.40, No.3, 200-208, 2000. (Keyword) Lingual artery / Pseudoaneurysm (Link to Publication Site) ● Publication site (DOI): 10.11242/dentalradiology1960.40.200 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1574231875284485760 ● Search Scopus @ Elsevier (DOI): 10.11242/dentalradiology1960.40.200 (DOI: 10.11242/dentalradiology1960.40.200, CiNii: 1574231875284485760)
26.	Keiji Oishi, Mika Oishi, Akira Takahashi, Jun-ichi Kido, Shuzaburo Uemura and Toshihiko Nagata : Examination of the roots of paramolar tuberoles with computed tomography: Report of 3 cases, Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, Vol.88, No.4, 479-483, 1999.
27.	Toru Takeuchi, Akira Takahashi, Takaharu Kudoh, Michiko Kubo and Kenji Fujisawa : Adenoid Cystic Carcinoma of the Maxilla with Perineural Invasion into the Cranium. Report of a Case, Dental Radiology, Vol.38, No.2, 124-125, 1998.
28.	Toru Takeuchi, Akira Takahashi, Chieko Sugawara and Naoki Maeda : Panoramic Radiography of the Temporomandibular Joint Part 2:A Study of Horizontal Optimum Angle of X-ray Beam to Mandibular Condyle, 1997. (Summary) The horizontal angle of x-ray beam projection to obtain an optimum anterior-oblique view of the mandibular condyle on a panoramic radiogram with least superimposition of the cranial base structures was examined. Eleven left temporomandibular joints from 11 dried human skulls were studied. Thirteen images were obtained for each joint, projected from 8° posterior to 52° anterior in 5° steps. The possible structures superimposing the condyle were the eminence from infratemporal crest to sphenoid spine, the eminence from articular tubercle to sphenoid spine, post glenoid process, anterior wall of the external auditory meatus, and mastoid process. None of the structures except mastoid process caused any problem in tracing the contour of the condyle. The part of the condyle with superimposition of the mastoid process was difficult to interpret, and extent of the part spread gradually as the projection angle increased. Nine out of 11 (82%) condyles were not superimposed with the mastoid process when a 30° anterior projection was adopted. This was considered to be the most suitable angle to obtain an anterior-oblique aspect of the mandibular condyle keeping good visibility. (Link to Publication Site) ● Publication site (DOI): 10.11242/dentalradiology1960.37.41 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204962062848 ● Search Scopus @ Elsevier (DOI): 10.11242/dentalradiology1960.37.41 (DOI: 10.11242/dentalradiology1960.37.41, CiNii: 1390001204962062848)
29.	下村学, Takaharu Kudoh, Shin-ichi Kawaguchi, Akira Takahashi, Toru Takeuchi, Chieko Sugawara, Hidehiko Hosoki, 坂野啓一 and 上村修三郎 : Panoramic Rdiography of Temporomandibular joint. Part1: Measurements of the Intercondylar distance, Dental Radiology, Vol.37, No.1, 35-40, 1997. (Summary) To obtain a clear image of the temporomandibular joint (TMJ) on a rotational panoramic radiograph, the mandibular condyle should be in the image layer of panoramic equipment. The intercondylar distance in Japanese subjects was measured to identify the position of TMJ relative to the image layer. Submento-vertex radiographs from 848 patients suspected of having temporomandibular disorders (669 females; between 8 and 82 years, 179 males; between 9 and 79 years) were studied. The distance between the center points on long axes of the bilateral condyles was measured as an intercondylar distance. The measurement value was corrected by a magnification factor calculated from the inter-earplug distance on a radiograph and actual distance. The intercondylar distance showed normal distribution, and its mean value was found to be constant in the subjects with 20 years old or older, 101.1±4.7mm in femaless and 106.1±5.3mm in males. To derive a clear image of TMJ from the rotational panoramic radiography, the effective image layer distance between left and right TMJs should be adjustable to several values, for example, 101 and 106mm. (Keyword) panoramic radiography, temporomandibular joint, intercondylar distance, submento-vertex projection (Link to Publication Site) ● Publication site (DOI): 10.11242/dentalradiology1960.37.35 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1571980075608833152 ● Search Scopus @ Elsevier (DOI): 10.11242/dentalradiology1960.37.35 (DOI: 10.11242/dentalradiology1960.37.35, CiNii: 1571980075608833152)
30.	Chieko Sugawara, Akira Takahashi, Toru Takeuchi, Hidehiko Hosoki, 下村学 and 上村修三郎 : Panoramic radiography of the temporomandibular joint Part3:Detectability of osseous changes on autopsy mandibular condyles by two different projections in panoramic radiography, Dental Radiology, Vol.37, 127-135, 1997. (Summary) The detectability of osseous abnormalities of the mandibular condyle in two different projections using the panoramic x-ray unit was examined. Seventy two autopsy mandibular condyles with macroscopic osseous changes were selected. Corrected sagittal and frontal tomography and panoramic radiography were performed with the condyle in the tomographic layer. Panoramic radiography included two different projections, one at a horizontal angulation of 18° postero-medially from the frontal plane (lateral mode) and another 30° antero-medially (oblique mode). The vertical angulation of the x-ray tube was fixed upward 3° for the lateral and oblique projections. Radiographic concavity, osteophyte, sclerosis and erosion of the condyles were recorded. Sensitivity of the detection of these osseous abnormalities revealed by the two panoramic projections were calculated based on sagittal and frontal tomographic findings as a gold standard. Sensitivity of the detection of each abnormality revealed by lateral panoramic projections/oblique projections/combination of lateral and oblique projections were as follows. Concavity; 0.49/0.22/0.63, osteophyte; 0.69/0.38/0.69, erosion; 0.42/0.71/0.71, sclerosis; 0.46/0.38/0.50, total; 0.73/0.51/0.75. The oblique projection was essential for the detection of erosion, while the lateral projection for osteophyte. When panoramic radiography is employed as a scouting method for temporomandibular joint disease, two different projections are necessary to detect osseous abnormalities sensitively. (Keyword) temporomandibular joint / panoramic rdiography / diagnostic accuracy / projection angle (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204961936512 (CiNii: 1390001204961936512)
31.	Chieko Sugawara, Akira Takahashi, 柴田考典, 上村修三郎 and 吉澤信夫 : Studies on temporomandibular joints in elderly Japanese, --- Macroscopic evaluation of autopsy condyles ---, Journal of the Japanese Society for the Temporomandibular Joint, Vol.7, No.1, 95-109, 1994. (Keyword) condyle / condylar shape / anatomy / deviation in form (Link to Publication Site) ● Publication site (DOI): 10.11246/gakukansetsu1989.7.95 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679398499968 ● Search Scopus @ Elsevier (DOI): 10.11246/gakukansetsu1989.7.95 (DOI: 10.11246/gakukansetsu1989.7.95, CiNii: 1390282679398499968)

Academic Paper (Unrefereed Paper):

1.	Maki Hosoki, Toyoko Satsuma, Akira Takahashi, Eiichi Bando, Masanori Nakano, Hidehiko Hosoki, Keisuke Nishigawa and Hisahiro Takeuchi : Accuracy of three-dimensional temporomandibular joint reconstruction using spiral CT, Journal of the Japanese Society for the Temporomandibular Joint, Vol.17, No.1, 67, 2005.

Review, Commentary:

1.	Seiichiro Kitamura, Akira Takahashi and Youji Miyamoto : 口腔外科医に必要な局所解剖学の知識11-頸部前面の深層—口腔の炎症が全身に拡がる経路を理解するために, Dental Outlook, Vol.111, No.5, 904-911, May 2008.
2.	Seiichiro Kitamura, Akira Takahashi and Youji Miyamoto : 歯科医師・口腔外科医に必要な局所解剖学の知識11, Dental Outlook, Vol.111, No.5, 904-911, May 2008.
3.	Seiichiro Kitamura, Akira Takahashi and Youji Miyamoto : 歯科医師・口腔外科医に必要な局所解剖学の知識10—前頸部の皮下組織と顎下部—顎下部の腫れを理解するために, Dental Outlook, Vol.111, No.4, 690-697, Apr. 2008.
4.	Seiichiro Kitamura, Akira Takahashi and Youji Miyamoto : 口腔外科医に必要な局所解剖学の知識9—翼突下顎隙と翼突前隙—口腔の「奥座敷(炎症波及路)」としての重要性を考, Dental Outlook, Vol.111, No.3, 494-501, Mar. 2008.
5.	Seiichiro Kitamura, Akira Takahashi and Youji Miyamoto : 歯科医師・口腔外科医に必要な局所解剖学の知識8—咬筋・耳下腺部と側頭部，および下顎後窩—耳下腺手術および下顎骨折時の対応のために, Dental Outlook, Vol.111, No.2, 280-287, Feb. 2008.
6.	Seiichiro Kitamura, Chihiro Shinohara and Akira Takahashi : 見える!わかる!臨床に役立つ解剖写真集7, Dental Outlook, Vol.108, No.1, 72-78, Jul. 2006.

Proceeding of International Conference:

1.	Akira Takahashi, Chieko Sugawara, Naoki Maeda, Hidehiko Hosoki and Eiichi Honda : Mediastinal abscess originated from dental infection:evaluation of 2 cases with CT images, The 16th international congress of Dentomaxillofacial Radiology, Beijing, Jun. 2007.
2.	Maki Hosoki, Keisuke Nishigawa, Toyoko Satsuma, Eiichi Bando, Akira Takahashi, Hidehiko Hosoki and Masanori Nakano : Evaluation of Three-dimensional Temporomandibular Joint Image Reconstructed from Spiral CT Data, 82th General Session and Exhibition of the International Association for Dental Research, Jun. 2003.
3.	Chieko Sugawara, 下村学, Akira Takahashi, 上村修三郎 and 柴田考典 : 摘出下顎頭の肉眼的所見とックス線断層画像所見との比較, 第8回日本顎関節学会総会(鶴見大学・関内), 横浜市関内, Jul. 1995. (Keyword) temporomandibular joint / 屍体 / エックス線断層撮影

Proceeding of Domestic Conference:

1.	Akira Takahashi, Kazuya Akita, Naoyuki Fukuda, Natsumi Takamaru, Naito Kurio, Chieko Sugawara and Youji Miyamoto : Analysis of the sublingual artery using contrast-enhanced computed tomography, 日本歯科放射線学会第64回学術大会, Vol.64, 40, May 2024. (Keyword) computed tomography / dental implants / floor of the mouth / lingual perimandibular vessels / oral hemorrhage / postoperative bleeding / sublingual artery
2.	Takaharu Kudoh, Keiko Kudoh, Natsumi Takamaru, Akira Takahashi, Naito Kurio, Chisato Tonoiso, Akiko Kubo, Takashi Kawanaka, Youji Miyamoto and Hitoshi Ikushima : Unilateral Neck Volumetric-Modulated Arc Therapy, 日本歯科放射線学会第64回学術大会, May 2024.
3.	Naito Kurio, Kumiko Kamada, Atsushi Uesugi, 横田美保, 赤井亨輔, Yoshiko Yamamura, Akira Takahashi and Youji Miyamoto : ヒアルロン酸阻害薬による口腔扁平上皮癌細胞の老化誘導とsenolytic therapy, 第68回日本口腔外科学会総会・学術大会, Nov. 2023.
4.	野上幸裕, Naoyuki Fukuda, Kazuya Akita, 浦田豊彰, Natsumi Takamaru, Takaharu Kudoh, Akira Takahashi and Youji Miyamoto : 下顎のエナメル上皮腫と歯原性角化嚢胞のCTによる画像診断学的検討, 第70回NPO法人日本口腔科学会中国・四国地方部会, Oct. 2023.
5.	Yoshiko Yamamura, Naito Kurio, Kumiko Kamada, Takaharu Kudoh, Akira Takahashi, Keiko Kudoh and Youji Miyamoto : チタン製インプラント体のオッセオインテグレーション獲得に関与するmiRNAの検索, 第67回日本口腔外科学会総会・学術大会, Nov. 2022.
6.	Kazuya Akita, Naoyuki Fukuda, Natsumi Takamaru, Takaharu Kudoh, Keiko Kudoh, Naito Kurio, Akira Takahashi and Youji Miyamoto : 炭酸アパタイト顆粒(サイトランスグラニュール)の歯槽骨造成術およびソケットプリザベーションへの応用, 第50回(公社)日本口腔外科学会中国四国支部学術集会, Jan. 2022.
7.	Kumiko Kamada, Naito Kurio, Atsushi Uesugi, 横田美保, Kazuya Akita, Naoyuki Fukuda, Yoshiko Yamamura, Takaharu Kudoh, Natsumi Takamaru, Keiko Kudoh, Akira Takahashi and Youji Miyamoto : 歯性感染症により発症した側頭部ガス壊疽の1例, 第50回(公社)日本口腔外科学会中国四国支部学術集会, Jan. 2022.
8.	Kazuya Akita, Naoyuki Fukuda, Kumiko Kamada, Atsushi Uesugi, Yoshiko Yamamura, Takaharu Kudoh, Natsumi Takamaru, Keiko Kudoh, Naito Kurio, Akira Takahashi and Youji Miyamoto : 炭酸アパタイト顆粒(サイトランスグラニュール)を用いて歯槽骨造成を行った2例, 第68 回NPO 法人日本口腔科学会中国・四国地方部会, Nov. 2021.
9.	Takaharu Kudoh, Keiko Kudoh, Hitoshi Ikushima, Akihiro Haga, Akira Takahashi and Youji Miyamoto : Dosimetric evaluation of contralateral neck in the unilateral neck volumetric modulated arc radiotherapy, 第19 回中国四国口腔癌研究会学術集会, Nov. 2021.
10.	Kumiko Kamada, Naito Kurio, Naoyuki Fukuda, 横田美保, Kazuya Akita, Atsushi Uesugi, Yoshiko Yamamura, Takaharu Kudoh, Akira Takahashi and 宮本洋二 : 口腔癌術後に多発肺結節を認めた敗血症性肺塞栓症の一例, 第49回(公社)日本口腔外科学会中国四国支部学術集会, Feb. 2021.
11.	Yukina Hirata, Susumu Nishio, Kenya Kusunose, Takaharu Kudoh, Akira Takahashi, Mai Matsumoto, Asami Yuasa, Kenya Kusunose, Hirotsugu Yamada and Masataka Sata : 含水法で明瞭に描出できた口腔内癌の1 例, 日本超音波医学会第29回四国地方会学術集会, Oct. 2019.
12.	Keiko Kudoh, 鎌田久美子, Yoshiko Yamamura, Go Ohe, Naito Kurio, Kazuya Akita, Takaharu Kudoh, Akira Takahashi, Takamitsu Mano and Youji Miyamoto : 上顎洞内異物迷入8症例の臨床的検討, 第48回(公社)日本口腔外科学会中国四国支部学術集会, May 2019.
13.	Keiko Kudoh, Takaharu Kudoh, Tetsuya Tamatani, Yoshiko Yamamura, Natsumi Takamaru, Go Ohe, Akira Takahashi, Kenji Fujisawa, 横田美保, 鎌田久美子 and Youji Miyamoto : 当科における口腔扁平苔癬症例の臨床的検討, 日本歯科人間ドック学会第20 回学術大会, Dec. 2017.
14.	Akira Takahashi : 白いものが写っていますが，何でしょうか? デンタルやパノラマ写真の不透過像, 四国歯学会第51回例会・第36回総会, Jun. 2017.
15.	横田美保, Keiko Kudoh, Tetsuya Tamatani, 鎌田久美子, Naoyuki Fukuda, Natsumi Takamaru, Yoshiko Yamamura, Takayuki Nakagawa, Go Ohe, Takaharu Kudoh, Akira Takahashi, Kenji Fujisawa, 鯨岡聡子, Yasusei Kudo, Naozumi Ishimaru and Youji Miyamoto : 当科における歯原性角化嚢胞の臨床的検討, 第46回日本口腔外科学会中国四国学術集会, May 2017.
16.	Akira Takahashi, Takaharu Kudoh, Keiko Kudoh, Natsumi Takamaru, Go Ohe, Tetsuya Tamatani, Kenji Fujisawa, Chieko Sugawara and Youji Miyamoto : 咽頭扁桃結石に関するX線診断学的検討, 第71回NPO法人日本口腔科学会学術集会, Apr. 2017.
17.	Tetsuya Tamatani, Natsumi Takamaru, Go Ohe, Akira Takahashi, Kenji Fujisawa and Youji Miyamoto : 早期口腔扁平上皮癌患者におけるABCG2，ALDH1，Bmi-1，CD24およびCD44発見に関する検討, 第71回NPO法人日本口腔科学会学術集会, Apr. 2017.
18.	Keiko Kudoh, 鎌田久美子, 横田美保, Natsumi Takamaru, Yoshiko Yamamura, Go Ohe, Takaharu Kudoh, Akira Takahashi, Tetsuya Tamatani, Kenji Fujisawa, Hirokazu Nagai and Youji Miyamoto : 当科における口腔がん検診の現況, 日本歯科人間ドック学会第19回学術大会, Dec. 2016.
19.	Horikawa Eriko, Susumu Abe, Kenji Fujisawa, Akira Takahashi, Eiji Yamauchi, Yoritoki Tomotake, Youji Miyamoto and Fumiaki Kawano : 単独歯インプラントの隣在歯の生存率に関する調査, 日本口腔インプラント学会中国・四国支部学術大会, 45, Nov. 2016.
20.	Kamata Kumiko, Akira Takahashi, Go Ohe, Natsumi Takamaru, Kenji Fujisawa, Hirokazu Nagai, Susumu Abe and Youji Miyamoto : CT画像による副オトガイ孔の発現頻度に関する検討, 日本口腔インプラント学会中国・四国歯部学術大会, 33, Nov. 2016.
21.	Tetsuya Tamatani, Natsumi Takamaru, 鎌田久美子, 横田美保, Yoshiko Yamamura, Keiko Kudoh, Go Ohe, Takaharu Kudoh, Akira Takahashi, Kenji Fujisawa, Hirokazu Nagai and Youji Miyamoto : 当科における早期口腔扁平上皮癌患者の臨床的検討, 第64回NPO法人日本口腔科学会中国・四国地方部会, Oct. 2016.
22.	Akira Takahashi, 鎌田久美子, Yoshiko Yamamura, Natsumi Takamaru, Takaharu Kudoh, Keiko Kudoh, Go Ohe, Kenji Fujisawa, Tetsuya Tamatani, Hirokazu Nagai and Youji Miyamoto : 口腔扁平上皮癌の頸部リンパ節転移診断におけるFDG-PET検査の有用性, 第15回中国四国口腔癌研究会, Oct. 2016.
23.	Takaharu Kudoh, Keiko Kudoh, Akira Takahashi and Youji Miyamoto : 口腔癌に対する強度変調放射線治療の有効性について, NPO法人日本歯科放射線学会第57回学術大会・第13回定例総会, Jun. 2016.
24.	Akira Takahashi, Takaharu Kudoh, Keiko Kudoh, Natsumi Takamaru, Go Ohe, Tetsuya Tamatani, Hirokazu Nagai, Kenji Fujisawa and Youji Miyamoto : 硬口蓋を基準とした後上歯槽動脈の走行に関する検討, 第70回NPO法人日本口腔科学会学術集会, Apr. 2016.
25.	Chieko Sugawara, Akira Takahashi, Takaharu Kudoh, Fumiaki Kawano and Youji Miyamoto : 歯科受診を契機にして発見された他科領域の悪性疾患症例, 日本歯科放射線学会第35回関西・九州合同地方会, Dec. 2015.
26.	Akira Takahashi, Chieko Sugawara, Takaharu Kudoh, Keiko Kudoh, Natsumi Takamaru, Go Ohe, Tetsuya Tamatani, Kenji Fujisawa, Hirokazu Nagai and Youji Miyamoto : 舌扁桃結石に関するX線診断学的検討, 第63回NPO法人日本口腔科学会中国・四国地方部会, Nov. 2015.
27.	Akira Takahashi, Chieko Sugawara, Takaharu Kudoh, Keiko Kudoh, Natsumi Takamaru, Go Ohe, Tetsuya Tamatani, Hirokazu Nagai and Youji Miyamoto : 口蓋扁桃結石に関するX線診断学的検討 -パノラマX線写真における描出状況, 第69回日本口腔科学会学術集会, May 2015.
28.	Hirokazu Iwasaki, Akira Takahashi, Takaharu Kudoh, Chieko Sugawara and Michiko Kubo : Computer-Aided Diagnostic System of the Jaw Lesions by Probabilistic Methods: Improvement of accuracy by adding measurement findings=, Nov. 2014. (Keyword) CAD
29.	Chieko Sugawara, Akira Takahashi, Fumiaki Kawano and Youji Miyamoto : 歯科領域における超音波検査の現状, 日本超音波医学会第24回四国地方会学術集会, Oct. 2014. (Keyword) 口腔悪性腫瘍 / 頸部リンパ節転移
30.	鎌田久美子, Kazumi Takaishi, Akira Takahashi, Takaharu Kudoh, 青山智祐, 大塚良, Satoru Eguchi, Shigemasa Tomioka and Hiroshi Kitahata : 気管切開後気管狭窄を有する患者の全身麻酔経験, 第29回中国・四国歯科麻酔研究会, Jul. 2014.
31.	Hirokazu Iwasaki, Takaharu Kudoh, Akira Takahashi, Chieko Sugawara and Michiko Kubo : 顎骨疾患の統計学的手法を用いたCADシステム -CADモデルに影響する因子の分析-, 日歯放第55回学術大会, Jun. 2014.
32.	Akira Takahashi, Nobuyuki Kuribayashi, Takaharu Kudoh, Daisuke Uchida, Tetsuya Tamatani, Hirokazu Nagai and Youji Miyamoto : 口腔癌の頸部リンパ節マッピングによる頸部リンパ節転移診断精度の検討, 日本口腔外科学会中国四国支部学術大会徳島, Apr. 2014.
33.	Hirokazu Iwasaki, Takaharu Kudoh, Akira Takahashi, Chieko Sugawara and Michiko Kubo : Bayesian Networkを用いた統計学的手法による顎骨X線透過性と不透過性との混合性疾患およびX線不透過性疾患の鑑別診断, 日歯放第18回臨床画像大会, Dec. 2013.
34.	Hirokazu Iwasaki, Takaharu Kudoh, Akira Takahashi, Chieko Sugawara and Michiko Kubo : Bayesian Networkを用いた統計学的手法による顎骨疾患の総合的鑑別診断, 日歯放第33回関西・九州合同地方会, Nov. 2013.
35.	Akira Takahashi, Takaharu Kudoh, Chieko Sugawara and Youji Miyamoto : 口蓋扁桃石灰化に関するX線診断学的検討 -CTにおける描出状況-, 第54回NPO法人日本歯科放射線学会学術大会, Jun. 2013.
36.	Hirokazu Iwasaki, Takaharu Kudoh, Akira Takahashi, Chieko Sugawara and Michiko Kubo : Bayesアルゴリズムを用いた統計学的手法による悪性腫瘍と骨随炎の鑑別診断, 日歯放第54回学術大会, Jun. 2013.
37.	Chieko Sugawara, Akira Takahashi and Michiko Kubo : Metastatic Neuroendocrine tumor in mandible from the duodenum, 第54回日本歯科放射線学会総会, Jun. 2013. (Keyword) neuroendocrine tumor
38.	Hirokazu Iwasaki, Takaharu Kudoh, Akira Takahashi, Chieko Sugawara and Michiko Kubo : Bayesアルゴリズムを用いた統計学的手法による顎骨嚢胞様疾患の鑑別診断, 第32回日本歯科放射線学会九州・関西合同地方会, Dec. 2012.
39.	Hirokazu Iwasaki, Takaharu Kudoh and Akira Takahashi : AmeloblastomaとKeratocystic Odontogenic Tumorおよび類似口腔疾患のBayesアルゴリズムを用いた統計学的手法による鑑別診断, 日本歯科放射線学会第17回臨床画像大会, Oct. 2012. (Keyword) Bayes theorem / ameloblastoma / Keratocystic Odontogenic Tumor
40.	佐藤裕子, Miwa Miyauchi, Daisuke Uchida, Natsumi Takamaru, Tetsuya Tamatani, Kenji Fujisawa, Hirokazu Nagai, Michiko Kubo, Chieko Sugawara, Akira Takahashi and Youji Miyamoto : 口腔扁平上皮癌の頸部リンパ節転移の診断におけるFDG-PET検査の有用性, 第40回(社)日本口腔外科学会中・四国地方会, May 2011.
41.	Chieko Sugawara, Akira Takahashi, Michiko Kubo and Eiichi Honda : PET-CT集積と頸部転移リンパ節の超音波画像との比較, 日本超音波医学会第20回四国地方学術集会, Oct. 2010.
42.	Akira Takahashi, Chieko Sugawara, Michiko Kubo, Naoki Maeda and Eiichi Honda : Ultrasonographic findings of lip lesion, Dental Radiology, May 2006.
43.	Akira Takahashi, Chieko Sugawara and Eiichi Honda : 舌病変の超音波画像所見, 日本乳腺甲状腺超音波診断会議, Oct. 2005.
44.	Chieko Sugawara, Akira Takahashi, Hidehiko Hosoki and Eiichi Honda : 多発性骨髄腫による全身性アミロイドーシスにより生じた巨舌症の一例, 日本歯科放射線学会大10回臨床画像大会, Sep. 2005.
45.	Akira Takahashi, Chieko Sugawara, Takaharu Kudoh, Michiko Kubo, Naoki Maeda and Eiichi Honda : 術後性蝶形骨洞嚢胞と真菌性炎の合併が疑われた一例, 日本歯科放射線学会大10回臨床画像大会, Sep. 2005.
46.	Akira Takahashi, Naoki Maeda, Chieko Sugawara, Takaharu Kudoh, Michiko Kubo, Hidehiko Hosoki, Hirokazu Iwasaki and Eiichi Honda : 躯幹部CTによる口腔顎顔面悪性腫瘍遠隔転移の評価, 四国歯学会, Jun. 2005.
47.	Maki Hosoki, Toyoko Satsuma, Akira Takahashi, Eiichi Bando, Masanori Nakano, Hidehiko Hosoki, Keisuke Nishigawa and Hisahiro Takeuchi : Accuracy of three-dimensional temporomandibular joint reconstruction using Spiral CT, The Annual Meeting of the Japanese Society for Temporomandibular Joint Program and Abstracts, Vol.2B8, 110, Jul. 2004.
48.	Maki Hosoki, Masanori Nakano, Eiichi Bando, Akira Takahashi, Keisuke Nishigawa, Hidehiko Hosoki, Hisahiro Takeuchi and Toyoko Satsuma : 関節円板復位に伴って咬合の不調和を生じた一症例, 第15回日本顎関節学会学術大会, Vol.1B11, Jun. 2002.
49.	Maki Hosoki, Toyoko Satsuma, Keisuke Nishigawa, Masanori Nakano, Eiichi Bando, Akira Takahashi, Hidehiko Hosoki, Chieko Sugawara, Hirokazu Iwasaki and 上村修三郎 : スパイラルCTによる顎関節の三次元形状, 第14回日本顎関節学会学術大会, Vol.2, No.2, 12, Jul. 2001.
50.	Chieko Sugawara, Akira Takahashi, 上村修三郎, Eiichi Bando and 柴田考典 : スパイラルCTの撮像方向に伴う下顎頭3次元再構成画像の形態・寸法の変動, 第14回日本顎関節学会総会(神戸市), Jul. 2001. (Keyword) 下顎頭 / spiral CT / 3-dimensional image processing
51.	Chieko Sugawara, Akira Takahashi, 上村修三郎 and 柴田考典 : パノラマX線撮影における下顎頭形態異常の診断能に関する研究, 第10回日本顎関節学会総会(札幌), Jul. 1997. (Keyword) temporomandibular joint / パノラマX線撮影 / 下顎頭
52.	上村修三郎, Chieko Sugawara, Akira Takahashi, 下村学 and Takaharu Kudoh : X線断層撮影による顎関節の前頭面観ー下顎前突症の場合-, 第9回日本顎関節学会総会(品川), Jul. 1996. (Keyword) temporomandibular joint / X線断層撮影

Et cetera, Workshop:

1.	Akira Takahashi, Chieko Sugawara, Michiko Kubo, Naoki Maeda, Hidehiko Hosoki and Eiichi Honda : 口唇病変の超音波画像所見, Shikoku Dental Research, Jul. 2006. (Keyword) 口唇 / 超音波 (Tokushima University Institutional Repository) ● Metadata: 297 (Tokushima University Institutional Repository: 297)

Report:

1.	Maki Hosoki, Masanori Nakano, Keisuke Nishigawa, Hisahiro Takeuchi, Hidehiko Hosoki, Akira Takahashi, Eiichi Bando, 上村修三郎, Toyoko Satsuma, 石川輝明 and 北村万里子 : Three-dimensional evaluation of temporomandibular joint using Spiral CT, --- Examination of accuracy ---, 平成13年度∼平成14年度科学研究費補助金(基盤研究(C)(2))研究成果報告書, Vol.13672038, Mar. 2004.

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

頸部リンパ節転移の超早期診断の挑戦-転移可視化モデルの樹立と超音波診断法の構築 (Project/Area Number: 24K13133 )
Establishment of visualizing oral cancer model and development of clinical ultrasonographic examination which detects initial cervical metastatic lymph node by oral cancer (Project/Area Number: 20K10140 )
establishment of oral cancer animal model with bone invasion and development of clinical computed tomography examination which enable assessing mandibular invasion caused by oral cancer (Project/Area Number: 16K11505 )
Challenge of raiditoherapy for oral cancer -definition of appropriate combination both cetuximab and docetaxel- (Project/Area Number: 26462838 )
Evaluation of 3-D Image Accuracy of Human Temporomandibular Joint Image that was Reconstructed from Spiral CT Data (Project/Area Number: 13672038 )
Improvement of a HTML-based teaching file for image diagnosis (Project/Area Number: 13671967 )
Improvement of a HTML-based teaching file for image diagnosis (Project/Area Number: 11671868 )
HTML形式による画像診断ティーチングファイルの構築 (Project/Area Number: 09771569 )
Development of a newly designed surface coil for maxillofacial MR imaging (Project/Area Number: 07557268 )
Angiography of the temporomandibular joint ; arterial blood supply to the mandibular condyle via the surrounding soft tissue (Project/Area Number: 06671881 )
画像直接取り込みによる超音波断層画像の画像ファイリングシステムの開発 (Project/Area Number: 05771551 )
顎関節症の診断におけるMR画像検査法の確立と応用に関する研究 (Project/Area Number: 05454509 )
顎関節滑液含有のリンフォカイン濃度の測定並びに顎内障画像診断との相関性の検討 (Project/Area Number: 04454500 )
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Associate Professor : Takahashi, Akira

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Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)