2762656/published_papers/53748589 Suzuka Hijiyama Motoharu Sasaki Yuji Nakaguchi Takeshi Kamomae Yuto Yamaji Moe Ishimoto Mayuka Kamada Yuki Tominaga Masahide Tominaga Hitoshi Ikushima Evaluation of feasibility DVH-guided re-optimization for RapidPlan-generated prostate VMAT plans Medical Dosimetry null null 20260800 2762656/published_papers/51967495 Takahiro Kato Hiroshi Niwayama Yuki Tominaga Yosuke Nagasawa Daiki Senzaki Takaomi Harada Hisashi Sato A patch-based bolus technique for total scalp irradiation: Dosimetric impact of conformity and reproducibility Journal of Radiation Research null null 20260800 2762656/published_papers/50619967 冨永裕樹 粒子線治療の現在地-陽子線・炭素イオン線治療の基礎から臨床応用まで- 「呼吸性移動対策と4次元線量評価」 日本放射線技術学会誌 教育講座 82 8 null null 20260800 10.6009/jjrt.26%2D0810 2762656/published_papers/52010073 Yuto Yamaji Motoharu Sasaki Yuji Nakaguchi Takeshi Kamomae Yuki Kanazawa Kanako Sakuragawa Ryosuke Kasai Yuki Tominaga Hitoshi Ikushima Distinguishing model- and environment-related effects in knowledge-based planning of moderately hypofractionated prostate VMAT Physical and Engineering Sciences in Medicine null null 20260700 2762656/published_papers/51825460 Yuki Tominaga Robabeh Rahimi Yushi Wakisaka Mayu Nakata Yuya Miyasaka Takahiro Kato Motoharu Sasaki Akihiro Haga Teiji Nishio Evaluations of penumbra reduction using multi-leaf collimator and 3D bolus in scanned proton therapy International Journal of Particle Therapy null null 20260700 2762656/published_papers/54353896 Yushi Wakisaka Shuka Fukuda Toshiro Tsubouchi Noriaki Hamatani Masashi Yagi Mayu Nakata Yuki Tominaga Kazuhiko Hayashi Masaaki Takashina Kazumasa Minami Teiji Nishio Tatsuaki Kanai Corrigendum to "Tumor control probability analysis in carbon-ion radiotherapy for prostate cancer considering the oxygen effect" [Phys. Med. 143 (2026) 105744]. Physica Medica null null 20260600 2762656/published_papers/50950418 Yushi Wakisaka Yuya Miyasaka Yuki Tominaga Robabeh Rahimi Takeo Iwai Teiji Nishio Comparative Analysis of Proton and Carbon Ion Therapy for Head and Neck Cancer: LET-Dependent α/β Ratios in EQD2 and NTCP Radiation Research null null 20260500 2762656/published_papers/51825452 Yushi Wakisaka Yuki Tominaga Mayu Nakata Robabeh Rahimi Yuya Miyasaka Tatsuyuki Higashikawa Teiji Nishio Michinori Yamamoto Defining Clinically Relevant Motion Thresholds for Respiratory-Gated Scanned Proton Therapy of Liver Cancer: A Patient-Derived 4D Dynamic Dose Analysis Physica Medica null null 20260400 2762656/published_papers/50776185 Yuki Tominaga Caroline Bamberger Yushi Wakisaka Masaaki Takashina Xing Li Robabeh Rahimi Intermittent patient-specific quality assurance failures in proton therapy attributable to detector miscalibration Therapeutic Radiology and Oncology null null 20260400 2762656/published_papers/51761910 Yuto Yamaji Motoharu Sasaki Yuji Nakaguchi Takeshi Kamomae Yuki Tominaga Ryosuke Kasai Soma Sawada Hitoshi Ikushima Systematic comparison of manual, knowledge-based, and feasibility DVH approaches for prostate VMAT: stability and robustness Physical and Engineering Sciences in Medicine null null 20260300 2762656/published_papers/52855279 Yushi Wakisaka Yuki Tominaga Yuya Miyasaka Robabeh Rahimi Keith M Furutani Mayu Nakata Takeo Iwai Teiji Nishio Enhancing dose conformity in head and neck intensity‐modulated proton therapy using a novel dynamic multi‐leaf collimator strategy Abstract Background Proton pencil beam scanning (PBS) enables highly conformal dose distributions; however, its lateral dose fall‐off (penumbra) can be compromised by the use of range shifters (RSs) and increased air gaps. In PBS for head and neck regions, where critical organs at risk (OARs) are frequently adjacent to the target, penumbra degradation may lead to increased OAR doses or suboptimal target coverage. The integration of a dynamic multi‐leaf collimator (dMLC), which adjusts leaf positions at each energy layer, has been shown to improve dose conformity in single‐field uniform dose (SFUD) delivery. In parallel, intensity‐modulated proton therapy (IMPT) offers enhanced dose shaping over SFUD by modulating beam intensity across multiple fields and does not require a single beam to encompass the entire target volume, providing greater flexibility in utilizing dMLC capabilities. Purpose This study integrates dMLC into IMPT for head and neck cancer and proposes a novel leaf positioning strategy. We evaluate the dosimetric impact of this approach and assess its potential clinical benefits in terms of target coverage and OAR sparing. Methods Treatment plans were retrospectively created for five patients with head and neck cancer. For each patient, IMPT plans with three beam angles were generated using three techniques: (1) uncollimated PBS, (2) dMLC _cover , in which the MLC encloses the target cross‐section at each energy layer, and (3) dMLC _block , in which the MLC actively blocks OARs and their distal regions. Dose‐volume histogram (DVH) metrics for the clinical target volume (CTV) and OARs were evaluated, including a total of 21 perturbed scenarios that combined ± 2 mm setup uncertainties (7 scenarios) and ± 3.5% range uncertainties (3 scenarios). The accuracy of dose calculations was validated by comparing calculated and measured lateral dose distributions at the isocenter plane in water using two‐dimensional gamma analysis with a 2%/2 mm criterion. Results The integration of dMLC with IMPT significantly reduced the dose to surrounding OARs while maintaining comparable target coverage and robustness relative to uncollimated PBS. Notably, dMLC _block demonstrated an enhanced dose‐sparing effect than dMLC _cover , particularly for OARs surrounded by the target. While maintaining comparable CTV D98% across three techniques, dMLC _cover achieved the greatest reduction in the mean doses to the eyeballs and optic nerves, as well as in the D2% to the optic chiasm, brain, and brainstem in most cases. The gamma passing rate between calculated and measured doses for dMLC _block exceeded 95% for all beams, confirming the accuracy of dose calculations involving complex leaf positions. Conclusions The combination of IMPT and dMLC provides notable dosimetric advantages, supporting its potential for clinical applications. Further validation across a broader range of cases is necessary to comprehensively assess its efficacy and safety, particularly with respect to leaf positioning accuracy and potential variations in biological effectiveness. Wiley Medical Physics 2473-4209 53 2 null null 20260219 10.1002/mp.70355 2762656/published_papers/51825454 Yuya Miyasaka Mayumi Ichikawa Hikaru Souda Yuki Tominaga Yuhi Wakisaka Hongbo Chai Miyu Ishizawa Masahi Koto Takeo Iwai Robustness Evaluation of Carbon Ion Therapy Treatment Planning for Cardiac Ventricular Tachycardia Physics and Imaging in Radiation Oncology null null 20260200 2762656/published_papers/50950435 Yushi Wakisaka Shuka Fukuda Mayu Nakata Yuki Tominaga Masaaki Takashina Kazumasa Minami Teiji Nishio Tatsuaki Kanai Tumor control probability analysis in carbon-ion radiotherapy for prostate cancer considering the oxygen effect Physica Medica null null 20260200 2762656/published_papers/50950371 Yushi Wakisaka Yuki Tominaga Xing Li Caroline Bamberger Jackeline Castro Kuan Ling Chen Malgorzata D'Souza Robabeh Rahimi Enhancing Proton Therapy for Superficial Lesions Using Patient-Specific Bolus and Multi-Leaf Collimator Radiological Physics and Technology null null 20260200 2762656/published_papers/50776177 Yuki Tominaga Hiromitsu Endo Takahiro Kato Yushi Wakisaka Tatsuyuki Higashikawa Masao Murakami Michinori Yamamoto Dosimetric comparison of scanned proton therapy and volumetric modulated arc therapy in isodose-prescribed stereotactic body radiotherapy for lung cancer Journal of Radiation Research null null 20260200 2762656/published_papers/52787885 Ryo Tanokura Masato Horita Makoto Matsumoto Akari Miyahara Shinji Furukawa Yasushi Ido Akira Matsumoto Shinichi Ogawa Wataru Makino Yoshihito Matsui Yuki Tominaga Takahiro Kato Nobukazu Fuwa Beam commissioning of a new compact scanned proton therapy system with four different dose calculation algorithms. BACKGROUND: The Central Japan International Medical Center (Gifu prefecture, Japan) as the 20th Proton Therapy Institution in Japan, has newly installed a compact scanned proton therapy system, ProBeam 360°™. We installed two commercial treatment planning systems (TPSs): Eclipse and RayStation. No commissioning results have been reported between Varian's newest compact proton therapy system and the two TPSs.​ PURPOSE: We identified the optimal dose calculation algorithm for clinical use by evaluating the dose agreements between four dose calculation algorithms provided by two TPSs and the measured values using our new machine. METHODS: The two TPSs each had a pencil beam algorithm (PBA) and Monte Carlo (MC) dose engines (four in total). Validation plans were created for 26 box targets (with and without a 50-mm range shifter) in a homogeneous phantom optimized using Eclipse. We created three realistic clinical plans consisting of 42 beams in mock patients with prostate, head and neck, and C-shaped targets. We validated 12 heterogeneous plans for the lung and bone regions using all three optimizations and four dose algorithms with the TPSs. Measurements were performed on the lateral profiles at the isocenter plane. The calculated doses for each algorithm were compared with the measured doses. RESULTS: Each dose algorithm achieved an average gamma score of at least 95.6 ± 5.0% or higher (RayStation PBA) at 3%/3 mm in the box plans. For the patient and heterogeneous plans, the average gamma score exceeded 95% for only two MC algorithms. RayStation MC showed the highest dose calculation accuracy in both homogeneous and heterogeneous regions. CONCLUSIONS: All calculated doses of the box plans were in good agreement with the measurements, except for the RayStation PBA. For clinical use, RayStation MC is the preferred option for both homogeneous and heterogeneous cases. Journal of applied clinical medical physics 27 1 e70433 null 20260100 10.1002/acm2.70433 41414875 2762656/published_papers/50950245 Daiki Senzaki Takahiro Kato Shinya Komori Yuki Tominaga Takaomi Harada Hisashi Sato Preliminary comparison of scalp-sparing effects between 3DCRT and VMAT in pediatric and AYA craniospinal irradiation across photon energies: A phantom-based study in press Medical Dosimetry Available online 16 December 2025 null null 20251200 2762656/published_papers/50596166 Yuki Tominaga Yushi Wakisaka Takahiro Kato Keisuke Yasui Ryohei Kato Masaya Ichihara Masashi Tomida Motoharu Sasaki Masataka Oita Teiji Nishio Improvements of lateral penumbra at various depth regions in proton pencil beam scanning with a multileaf collimator: Dose verifications and plan comparisons Physica Medica 140:105684 null null 20251200 2762656/published_papers/50950292 Yuya Miyasaka Yuki Tominaga Yushi Wakisaka Isamu Maeshima Survey data analysis of treatment planning methods in particle therapy facilities Japan Journal of Radiology Online ahead of print null null 20251100 2762656/published_papers/51211932 Yusuke Suzuki Motoharu Sasaki Yuji Nakaguchi Takeshi Kamomae Yuki Kanazawa Yuki Tominaga Soma Sawada Yuto Yamaji Hitoshi Ikushima Efficient Knowledge-based Planning Model Construction in Institutions with Limited Cases Using Plan Quality Metrics Radiological Physics and Technology 18(4):1221-1230 null null 20251000 2762656/published_papers/50596165 Yushi Wakisaka Yuki Tominaga Keith M Furutani Teiji Nishio Dosimetric and Temporal Evaluation of Dynamic Collimation with Multi-Leaf Collimator in Scanned Proton Therapy: A Planning Study Physica Medica 137:105088 null null 20250800 2762656/published_papers/50596161 Yuki Tominaga Yushi Wakisaka Takahiro Kato Masaya Ichihara, Keisuke Yasui Motoharu Sasaki Masataka Oita Teiji Nishio Commissioning of respiratory-gated 4D dynamic dose calculations for various gating widths without spot timestamp in proton pencil beam scanning Medical Physics 52 8 e18026 null 20250800 2762656/published_papers/52488636 Yuya Miyasaka Yuki Tominaga Yushi Wakisaka Isamu Maeshima Survey and profile data on particle therapy technology in Japan. The purpose of this study is to report profile data on the technical elements of Japanese particle therapy facilities. We requested a survey on the following four technical elements; (1) facilities and systems, (2) immobilization device and treatment planning CT, (3) patient specific QA, and (4) patient positioning. Responses were received from 21 facilities. The most commonly used accelerators were synchrotrons, which were used in 17 facilities (81.0%). The lowest available energy was widely distributed between 55.6 MeV/u and 290 MeV/u, but the maximum energy was often around 240 MeV/u for proton beams and 430 MeV for carbon ion beams. Of all treatment rooms, passive irradiation accounted for 57.7% (30 rooms), layer stacking irradiation for 7.7% (4 rooms), and scanning irradiation for 32.7% (17 rooms). Shell-type immobilization devices were most commonly used in the head and neck region, and vacuum bags were most commonly used in the thoracic to caudal regions. Lateral dose profile measurement was the most commonly used patient specific QA method. The most commonly used detector was the ionization chamber or ionization chamber-type planar detector. 2D X-ray radiography was the most commonly used in patient positioning. Marker matching was commonly used for the prostate and liver, bone matching for the head and neck and lungs, and tumor matching was used only sparingly. The results of this study may clarify current issues in particle therapy technology and provide data to guide further technology development. Japanese journal of radiology null null 20250723 10.1007/s11604-025-01844-z 40699545 2762656/published_papers/49514448 Keisuke Yasui Miuna Hayashi Shiryu Otsuka Toshiyuki Toshito Chihiro Omachi Masaya Ichihara Riki Oshika Yuki Tominaga Hiromi Baba Hidetoshi Shimizu Naoki Hayashi Postal dosimetry audit for scanning proton beam using radiophotoluminescence glass dosimeter: A multicenter pilot study Medical Physics 52(6):4996-5004 null null 20250300 2762656/published_papers/48934790 Yushi Wakisaka Masashi Yagi Yuki Tominaga Shinichi Shimizu Teiji Nishio Kazuhiko Ogawa Nuclear interaction correction based on dual-energy computed tomography in carbon-ion radiotherapy Physics in Medicine & Biology 70 055012 null 20250100 10.1088/1361-6560/adaad4 2762656/published_papers/52787905 岩崎 美怜 加藤 貴弘 冨永 裕樹 小森 慎也 先崎 大樹 原田 崇臣 田代 雅実 佐藤 久志 小児全脳全脊髄照射におけるscalp-sparingに関する基礎的検討 VMATとIMPTの比較 (公社)日本診療放射線技師会 JART: 日本診療放射線技師会誌 2187-2538 71 10 1166 1166 20241000 2762656/published_papers/45991995 Motoharu Sasaki Yuji Nakaguchi Takeshi Kamomae Akira Tsuzuki Soma Sawada Koki Shibuya Masataka Oita Masahide Tominaga Yuki Tominaga Hitoshi Ikushima Comparative analysis of two dose-volume histogram prediction tools for treatment planning in volumetric-modulated arc therapy: A multi-planner study. The increase in high-precision radiation therapy, particularly volumetric-modulated arc therapy (VMAT), has increased patient numbers and expanded treatment sites. However, a significant challenge in VMAT treatment planning is the inconsistent plan quality among different planners and facilities. This study explored the use of dose-volume histogram (DVH) prediction tools to address these disparities, specifically focusing on RapidPlan (Varian Medical Systems) and PlanIQ (Sun Nuclear). RapidPlan predicts achievable DVHs and automatically generates optimization objectives. While it has demonstrated organ-at-risk (OAR) dose reduction benefits, the quality of the plan used to build its model significantly affects its predictions. On the other hand, PlanIQ offers ease of use and does not require prior model-building. Five planners participated in this study, each creating two treatment plans: one referencing RapidPlan and the other using PlanIQ. The planners had the freedom to adjust parameters while referencing the DVH predictions. The plans were evaluated using "Plan Quality Metric" (PQM) scores to assess the planning target volume excluding the rectum and OARs. The results revealed that RapidPlan-referenced plans often outperformed PlanIQ-based plans, with less interplanner variability. PlanIQ played a pivotal role in the construction of the RapidPlan model. This study is the first to compare plans generated by multiple planners using both tools. This study provides insights into optimizing treatment planning by considering the characteristics of both RapidPlan and PlanIQ. Medical Dosimetry 49 3 271 275 20240330 10.1016/j.meddos.2024.02.002 38556402 2762656/published_papers/45807174 Yuki Tominaga Masaki Suga Mikuni Takeda Yuki Yamamoto Takashi Akagi Takahiro Kato Sunao Tokumaru Michinori Yamamoto Masataka Oita Comparing interplay effects in scanned proton therapy of lung cancer: Free breathing with various layer and volume rescanning versus respiratory gating with different gate widths. PURPOSE: We investigated interplay effects and treatment time (TT) in scanned proton therapy for lung cancer patients. We compared free-breathing (FB) approaches with multiple rescanning strategies and respiratory-gating (RG) methods with various gating widths to identify the superior irradiation technique. METHODS: Plans were created with 4/1, 2/2, and 1/4 layered/volume rescans of FB (L4V1, L2V2, and L1V4), and 50%, 30%, and 10% gating widths of the total respiratory curves (G50, G30, and G10) of the RG plans with L4V1. We calculated 4-dimensional dynamic doses assuming a constant sinusoidal curve for six irradiation methods. The reconstructed doses per fraction were compared with planned doses in terms of dose differences in 99% clinical-target-volume (CTV) (ΔD99%), near-maximum dose differences (ΔD2%) at organs-at-risk (OARs), and TT. RESULTS: The mean/minimum CTV ΔD99% values for FB were -1.0%/-4.9%, -0.8%/-4.3%, and -0.1%/-1.0% for L4V1, L2V2, and L1V4, respectively. Those for RG were -0.3%/-1.7%, -0.1%/-1.0%, and 0.0%/-0.5% for G50, G30, and G10, respectively. The CTV ΔD99% of the RGs with less than 50% gate width and the FBs of L1V4 were within the desired tolerance (±3.0%), and the OARs ΔD2% for RG were lower than those for FB. The mean TTs were 90, 326, 824, 158, 203, and 422 s for L4V1, L2V2, L1V4, G50, G30, and G10, respectively. CONCLUSIONS: FB (L4V1) is the most efficient treatment, but not necessarily the optimal choice due to interplay effects. To satisfy both TT extensions and interplay, RG with a gate width as large as possible within safety limits is desirable. Physica Medica 120 103323 null 20240309 10.1016/j.ejmp.2024.103323 38461635 2762656/published_papers/43967627 Yuki Tominaga Masaki Suga Mikuni Takeda Yuki Yamamoto Takashi Akagi Takahiro Kato Sunao Tokumaru Michinori Yamamoto Masataka Oita Dose-volume comparisons of proton therapy for pencil beam scanning with and without multi-leaf collimator and passive scattering in patients with lung cancer Elsevier BV Medical Dosimetry 0958-3947 49 1 13 18 20231100 10.1016/j.meddos.2023.10.006 2762656/published_papers/43351009 Yuki Tominaga Yuki Tominaga, Masataka Oita, Junya Miyata, Takahiro Kato Masataka Oita Junya Miyata Takahiro Kato Experimental validation of a 4D dynamic dose calculation model for proton pencil beam scanning without spot time stamp considering free-breathing motion. Experimental validation of a 4D dynamic dose calculation model for proton pencil beam scanning without spot time stamp considering free‐breathing motion PURPOSE: We developed a 4-dimensional dynamic dose (4DDD) calculation model for proton pencil beam scanning (PBS). This model incorporates the spill start time for all energies and uses the remaining irradiated spot time model instead of irradiated spot time logs. This study aimed to validate the calculation accuracy of a log file-based 4DDD model by comparing it with dose measurements performed under free-breathing conditions, thereby serving as an alternative approach to the conventional log file-based system. METHODS: Three cubic verification plans were created using a heterogeneous block phantom; these plans were created using 10 phase 4D-CT datasets of the phantom. The CIRS dynamic platform was used to simulate motion with amplitudes of 2.5, 3.75, and 5.0 mm. These plans consisted of eight- and two-layered rescanning techniques. The lateral profiles were measured using a 2D ionization chamber array (2D-array) and EBT3 Gafchromic films at four starting phases, including three sinusoidal curves (periods of 3, 4, and 6 s) and a representative patient curve during actual treatment. 4DDDs were calculated using in-house scripting that assigned a time stamp to each spot and performed dose accumulation using deformable image registration. Furthermore, to evaluate the impact of parameter selection on our 4DDD model calculations, simulations were performed assuming a ±10% change in irradiation time stamp (0.8 ± 0.08 s) and spot scan speed. We evaluated the 2D gamma index and the absolute point doses between the calculated values and the measurements. RESULTS: The 2D-array measurements revealed that the gamma scores for the static plans (no motion) and 4DDD plans exceeded 97.5% and 93.9% at 3%/3 mm, respectively. The average gamma score of the 4DDD plans was at least 96.1%. When using EBT3 films, the gamma scores of the 4DDD model exceeded 92.4% and 98.7% at 2%/2 mm and 3%/3 mm, respectively. Regarding the 4DDD point dose differences, more than 95% of the dose regions exhibited discrepancies within ±5.0% for 97.7% of the total points across all plans. The spot time assignment accuracy of our 4DDD model was acceptable even with ±10% sensitivity. However, the accuracy of the scan speed, when varied within ±10% sensitivity, was not acceptable (minimum gamma scores of 82.6% and maximum dose difference of 12.9%). CONCLUSIONS: Our 4DDD calculations under free-breathing conditions using amplitudes of less than 5.0 mm were in good agreement with the measurements regardless of the starting phases, breathing curve patterns (between 3 and 6 s periods), and varying numbers of layered rescanning. The proposed system allows us to evaluate actual irradiated doses in various breathing periods, amplitudes, and starting phases, even on PBS machines without the ability to record spot logs. Medical physics Medical Physics 51 1 566 578 20230900 10.1002/mp.16725 37672227 2762656/published_papers/41720696 Junya Miyata Yuki Tominaga Kazuto Kondo Yasuaki Sonoda Hideki Hanazawa Mami Sakai Satoshi Itasaka Masataka Oita Masahiro Kuroda Dosimetric comparison of pencil beam scanning proton therapy with or without multi-leaf collimator versus volumetric-modulated arc therapy for treatment of malignant glioma Elsevier BV Medical Dosimetry 0958-3947 48 2 105 112 20230300 10.1016/j.meddos.2023.01.008 2762656/published_papers/41720671 Yuki Tominaga Masataka Oita Takashi Akagi Junya Miyata Shuichi Harada Tetsunori Matsuda Masahiro Kuroda Comparison of the Dose Calculation Accuracy between the Commercial Pencil Beam Algorithm and Various Statistical Uncertainties with Monte Carlo Algorithm in New Proton Pencil Beam Scanning System We validated the calculation accuracies and times between the pencil beam algorithm (PBA) and the Monte Carlo (MC) algorithm in the new proton pencil beam scanning system. Thirty-three (homogeneous phantom) and three (heterogeneous phantom) uniform-dose plans were verified for cubic targets. These plans were calculated using the PBA and five MC statistical uncertainties of 0.3%, 0.5%, 1.0%, 1.5%, and 2.0%. We also evaluated the required dose calculation times per beam with the statistical analysis. Then, eight clinically realistic beams were validated as the end-toend test. The dose differences of 0.3% and 0.5% uncertainty MC plans were satisfied our tolerance (< ±3.0%). All five uncertainty MC plans improved at least the average/minimum gamma score from 93.8%/33.5% to 98.5%/88.9% for homogeneous (2%/2 mm) and 96.7%/83.9% to 98.8%/94.1% for heterogeneous (3%/3 mm) than PBA plans. However, the average calculation times of 0.3% and 0.5% uncertainties in MC plans were 15.5 and 5.8 times longer than in PBA plans (p < 0.001). The endto-end tests satisfied the acceptable with a statistical uncertainty of MC below 0.5%. Although the dose calculation times would be significantly increased, we suggest that the statistical uncertainty of MC below 0.5% is appropriate for clinical use with PBS plans. Hirosaki University Press. Radiation Environment and Medicine 2432-163X 12 1 53 64 20230300 10.51083/radiatenvironmed.12.1_53 1390295336734760832 2762656/published_papers/41498935 Yuki Tominaga Yusuke Sakurai Junya Miyata Shuichi Harada Takashi Akagi Masataka Oita Validation of pencil beam scanning proton therapy with multi‐leaf collimator calculated by a commercial Monte Carlo dose engine Wiley Journal of Applied Clinical Medical Physics 1526-9914 23 12 e13817 null 20221124 10.1002/acm2.13817 2762656/published_papers/43351048 冨永裕樹 笈田将皇 山中将史 多田光寿 松田哲典 多機能ノズル搭載の陽子線治療装置におけるペンシルビームスキャニング法のクリニカルビームコミッショニング 津山中央病院医学雑誌 34 1 31 45 20200900 2762656/published_papers/43315021 山中将史 多田光寿 春名孝泰 平井諒太 張智凱 田村瑞希 山本崇裕 伊田和司 冨永裕樹 井原弘貴 金東村 丹羽康江 脇隆博 松田哲典 前立腺がんの陽子線治療における前斜方向ビームのロバスト性の評価 津山中央病院医学雑誌 34 1 17 29 20200900 2762656/published_papers/41498941 Soichi Sugiyama Kuniaki Katsui Yuki Tominaga Takahiro Waki Norihisa Katayama Hidenobu Matsuzaki Shin Kariya Masahiro Kuroda Kazunori Nishizaki Susumu Kanazawa Dose distribution of intensity-modulated proton therapy with and without a multi-leaf collimator for the treatment of maxillary sinus cancer: a comparative effectiveness study Abstract Background Severe complications, such as eye damage and dysfunciton of salivary glands, have been reported after radiotherapy among patients with head and neck cancer. Complications such as visual impairment have also been reported after proton therapy with pencil beam scanning (PBS). In the case of PBS, collimation can sharpen the penumbra towards surrounding normal tissue in the low energy region of the proton beam. In the current study, we examined how much the dose to the normal tissue was reduced by when intensity-modulated proton therapy (IMPT) was performed using a multi-leaf collimator (MLC) for patients with maxillary sinus cancer. Methods Computed tomography findings of 26 consecutive patients who received photon therapy at Okayama University Hospital were used in this study. We compared D2% of the region of interest (ROI; ROI-_D2%) and the mean dose of ROI (ROI-_mean) with and without the use of an MLC. The organs at risk (OARs) were the posterior retina, lacrimal gland, eyeball, and parotid gland. IMPT was performed for all patients. The spot size was approximately 5–6 mm at the isocenter. The collimator margin was calculated by enlarging the maximum outline of the target from the beam's eye view and setting the margin to 6 mm. All plans were optimized with the same parameters. Results The mean of ROI-_D2% for the ipsilateral optic nerve was significantly reduced by 0.48 Gy, and the mean of ROI-_mean for the ipsilateral optic nerve was significantly reduced by 1.04 Gy. The mean of ROI-_mean to the optic chiasm was significantly reduced by 0.70 Gy. The dose to most OARs and the planning at risk volumes were also reduced. Conclusions Compared with the plan involving IMPT without an MLC, in the dose plan involving IMPT using an MLC for maxillary sinus cancer, the dose to the optic nerve and optic chiasm were significantly reduced, as measured by the ROI-_D2% and the ROI-_mean. These findings demonstrate that the use of an MLC during IMPT for maxillary sinus cancer may be useful for preserving vision and preventing complications. Springer Science and Business Media LLC Radiation Oncology 1748-717X 14 1 209 null 20191121 10.1186/s13014-019-1405-y 2762656/published_papers/43315012 春名孝泰 冨永裕樹 山中将史 多田光寿 松田哲典 石川勉 弓狩一晃 明比直樹 井原弘貴 金東村 脇隆博 丹羽康江 藤島護 前立腺癌患者の陽子線治療におけるハイドロゲルスペーサ留置の有用性の検討 津山中央病院医学雑誌 33 1 45 54 20190900 2762656/published_papers/42443913 冨永 裕樹 笈田 将皇 脇 隆博 井原 弘貴 金 東村 丹羽 康江 松田 哲典 黒田 昌宏 藤島 護 前立腺癌高リスク症例に対する陽子線ラスタースキャニング法と強度変調回転放射線治療法との線量分布比較 (一財)津山慈風会津山中央病院 The Medical journal of Tsuyama Central Hospital 津山中央病院医学雑誌 0913-9176 33 1 31 44 20190900 2762656/published_papers/42146348 冨永 裕樹 笈田 将皇 張 智凱 平井 諒太 山中 将史 多田 光寿 春名 孝泰 田村 瑞希 山本 崇裕 伊田 和司 綱澤 勝之 松田 哲典 黒田 昌宏 金 東村 脇 隆博 丹羽 康江 藤島 護 前立腺患者の陽子線スポットスキャニングと従来法との線量分布比較 (一財)津山慈風会津山中央病院 The Medical journal of Tsuyama Central Hospital 津山中央病院医学雑誌 0913-9176 32 1 41 52 20180900 2762656/misc/43736467 TOMINAGA Yuki TOMINAGA Yuki OITA Masataka KATO Takahiro KATO Takahiro Experimental validation of gated proton pencil beam scanning with 4D dynamic dose calculations 呼吸同期陽子線ペンシルビームスキャニング法における4Dダイナミック線量の精度検証 日本医学物理学会学術大会報文集 1345-5362 125th null null 20230000 2762656/misc/43736474 TOMINAGA Yuki TOMINAGA Yuki OITA Masataka MIYATA Junya MIYATA Junya SAKURAI Yusuke AKAGI Takashi Efficient automated patient specific quality assurance using log files and a commercial treatment planning system in proton pencil beam scanning 陽子ペンシルビームスキャニングにおけるログファイルと市販の治療計画システムを使用した効率的な自動化された患者固有の品質保証 日本医学物理学会学術大会報文集 1345-5362 123rd null null 20220000 2762656/misc/43736480 TOMINAGA Yuki TOMINAGA Yuki OITA Masataka MIYATA Junya MIYATA Junya SAKURAI Yusuke HARADA Shuichi AKAGI Takashi Improvements of lateral penumbra widths for various optimized parameters in proton pencil beam scanning with and without a multi-leaf collimator マルチリーフコリメータの有無による陽子ペンシルビーム走査における種々の最適化パラメータのための横方向ペナンブラ幅の改良 日本医学物理学会学術大会報文集 1345-5362 121st null null 20210000 2762656/misc/43736478 春名孝泰 春名孝泰 OITA Masataka TOMINAGA Yuki TOMINAGA Yuki TADA Mitsutoshi YAMANAKA Masashi MATSUDA Tetsunori KURODA Masahiro Ion recombination and polarity correction factors for different types of ionization chambers in proton pencil beam scanning 陽子線ペンシルビームスキャニング法における異なる形状の電離箱のイオン再結合および極性効果補正係数 日本医学物理学会学術大会報文集 1345-5362 121st null null 20210000 2762656/misc/43736476 冨永裕樹 冨永裕樹 OITA Masataka AKAGI Takshi HARADA Shuichi YAMANAKA Masashi TADA Mitsutoshi MATSUDA Tetsunori KURODA Masahiro 治療計画装置RayStationによる陽子線ペンシルビームスキャニング治療のビームコミッショニングに関する研究 医学物理 Supplement 1345-5362 39 1 null null 20190000 2762656/presentations/55101477 大⻄ 直樹 芳賀 昭弘 渡邉 佳一郎 冨永 裕樹 高田 一樹 ⻭科⽤CBCT⾦属アーチファクト低減に向けた 深層学習⼿法とAIオートセグメンテーション精度の改善 医用画像情報学会 令和8年度秋季(第206回)大会 20261003 2762656/presentations/53406888 Naoki Kinoshita Yuki Tominaga Yushi Wakisaka Mayu Nakata Takahiro Kato Determination of Ion Recombination Behavior in a SynchrotronBased Proton Pencil Beam Scanning System AOCMP 2026 20260912 2762656/presentations/53406885 Daiki Senzaki Takahiro Kato Yuki Tominaga Yosuke Nagasawa Ayano Shibuya Takaomi Harada Hisashi Sato Optimization of beam arrangement in pediatric proton craniospinal irradiation: A dosimetric trade-off between lens and scalp sparing AOCMP 2026 20260911 2762656/presentations/53116849 Ayano Shibuya Takahiro Kato Hiroshi Niwayama Yuki Tominaga Yuki Narita Yosuke Nagasawa Daiki Senzaki Takaomi Harada Hisashi Sato Dosimetric and robustness comparison of automated noncoplanar volumetric-modulated arc therapy versus intensity-modulated proton therapy for maxillary sinus carcinoma AOCMP 2026 20260911 2762656/presentations/53492698 田野倉亮 堀田雅人 冨永裕樹 松本真 山田真由美 大脇尚篤 臼井宏樹 遠藤誠 古川晋司 井戸靖司 陽子線スポットスキャニング法を用いた呼吸同期照射のコミッショニング報告 第42回日本診療放射線技師学術大会 20260910 2762656/presentations/54674175 大西 直樹 芳賀 昭弘 渡邉 佳一郎 冨永 裕樹 高田 一樹 歯科用仮想CBCTシミュレータと深層学習を用いた再構成手法による金属アーチファクト低減法の開発 第132回日本医学物理学会学術大会 20260830 2762656/presentations/53480319 芳賀昭弘 藤原大裕 佐藤義秀 冨永裕樹 坂田洞察 多核種イオン核破砕データを用いた高精度量子分子動力学モデルの開発 第132回日本医学物理学会学術大会 20260830 2762656/presentations/53464422 藤原大裕 芳賀昭弘 坂田洞察 冨永裕樹 深層学習を用いたSECTベースの元素密度推定が粒子線治療の線量計算精度に及ぼす影響 第132回 日本医学物理学会学術大会 20260830 2762656/presentations/53441852 脇坂友詞 中田麻友 篠原靖宏 毛利ひかる 加藤晴也 山本浩平 冨永裕樹 宮坂友侑也 東川龍之 山本道法 前立腺がんに対する超寡分割陽子線治療の技術的および線量学的評価 第132回日本医学物理学会学術大会 20260830 2762656/presentations/53441844 小橋 佑介 壽賀 正城 冨永 裕樹 松尾 圭朗 寺嶋千貴 沖本 智昭 パッシブ照射法を用いた膵臓癌陽子線治療における多門照射治療計画検証 日本放射線腫瘍学会 粒子線治療部会2026 20260724 2762656/presentations/53406859 宮坂友侑也 冨永裕樹 脇坂友詞 中田麻友 石原大地 尾方俊至 片平慶 後藤大地 小橋佑介 高階正彰 高橋真一 田中爽大 田野倉亮 林直紀 松尾勇斗 松下慶一郎 山本崇裕 和田清隆 岩井岳夫 前島偉 多施設粒子線治療計画比較検証:前立腺癌ファントムスタディ 日本放射線腫瘍学会 粒子線治療部会2026 20260724 2762656/presentations/53349562 宮坂友侑也 冨永裕樹 脇坂友詞 中田麻友 岩井岳夫 前島偉 日本の粒子線治療施設における技術的側面に関するアンケート調査 研究 -呼吸性移動対策 装置QA編- 日本放射線腫瘍学会 粒子線治療部会2026 20260724 2762656/presentations/52022655 Daiyu Fujiwara Akihiro Haga Dousatsu Sakata Yuki Tominaga Impact of Deep Learning-Based Elemental Density Estimation on Particle Therapy Dose Calculation: A Virtual CT Study PTCOG 64 20260608 2762656/presentations/51577971 先﨑大樹 加藤貴弘 冨永裕樹 長澤陽介 原田崇臣 佐藤久志 小児陽子線全脳全脊髄照射における全脳照射ビームアレンジメントの最適化に関する検討 第82回日本放射線技術学会総会学術大会 20260417 2762656/presentations/51577970 Kentaro Hakamada Teiji Nishio Yuki Tominaga Yushi Wakisaka Mayu Nakata Aoi Takeshita Daichi Taniguchi Ren Yoshii Research on the biological effects of therapeutic-dose proton irradiation in live fish The 131st Scientific Meeting of the Japan Society of Medical Physics 20260417 2762656/presentations/51577969 Yushi Wakisaka Mayu Nakata Yuki Tominaga Yuya Miyasaka Teiji Nishio Takeo Iwai Michinori Yamamoto Application of dynamic multi-leaf collimator in intensity-modulated proton therapy for head and neck cancer: dosimetric evaluation and experimental verification The 131st Scientific Meeting of the Japan Society of Medical Physics 20260417 2762656/presentations/51577968 Mayu Nakata Yushi Wakisaka Yuki Tominaga Yuya Miyasaka Tatsuyuki Higashikawa Michinori Yamamoto Patient-Specific 4D Dose Analysis for Optimizing Gating Levels in Respiratory-Gated Scanning Proton Therapy for Lung Cancer The 131st Scientific Meeting of the Japan Society of Medical Physics 20260417 2762656/presentations/51536255 山本 道法 東川 龍之 加藤 晴也 篠原 靖宏 冨永 裕樹 毛利ひかる 山本 浩平 脇坂 友詞 藤野真由美 奥浦 陽子 村田 陽子 篠原 雅岳 岩本 崇史 坂 宗久 平尾 佳彦 アクティブ・ペンシル・ビームをもちいた前立腺癌 の陽子線治療 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/50361224 渋谷彩乃 加藤貴弘 庭山洋 冨永裕樹 成田優輝 原田崇臣 長澤陽介 先﨑大樹 渡部舜ノ介 武田爽汰 佐藤久志 限局型上顎洞癌に対するHyperArcとIMPTの線量分布比較 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/50361222 渡部舜ノ介 加藤貴弘 冨永裕樹 原田崇臣 長澤陽介 先﨑大樹 渋谷彩乃 武田爽汰 宮崎優菜 森谷侑紀 佐藤久志 大腿骨の回転エラーが前立腺癌陽子線治療の線量分布に及ぼす影響 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/50361221 武田爽汰 加藤貴弘 庭山洋 長澤陽介 冨永裕樹 原田崇臣 先﨑大樹 渡部舜ノ介 渋谷彩乃 佐藤久志 頭皮血管肉腫に対するHyperArcにおけるボーラスの再現性が及ぼす影響 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/50361220 先﨑大樹 加藤貴弘 冨永裕樹 長澤陽介 岩﨑美怜 小森慎也 原田崇臣 佐藤久志 全脳全脊髄照射におけるscalp-sparingに関する基礎的検討 -VMATとIMPTの比較- 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/50205622 宮坂友侑也 冨永裕樹 脇坂友詞 岩井岳夫 前島偉 日本の粒子線治療施設における技術的側面に関するアンケート調査研究 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/49977471 冨永裕樹 遠藤浩光 加藤貴弘 脇坂友詞 東川龍之 村上昌雄 山本道法 肺がんの定位放射線治療における辺縁線量処方の陽子線PBS法とVMAT法の線量分布比較 第38回日本放射線腫瘍学会学術大会 20251127 2762656/presentations/50428986 Yuya Miyasaka Mayumi Ichikawa Hikaru Souda Hongbo Chai Miyu Ishizawa Yuki Tominaga Yushi Wakisaka Masashi Koto Takeo Iwai Evaluation of target dose robustness in carbon ion therapy treatment planning for refractory ventricular tachycardia The 5th Annual Conference of PTCOG-AO 20251108 2762656/presentations/50216977 Yushi Wakisaka Yuki Tominaga Yuya Miyasaka Robabeh Rahimi Teiji Nishio Takeo Iwai Michinori Yamamoto Integrating Dynamic MLC into Head and Neck IMPT Using a Novel Leaf Positioning Strategy The 5th Annual Conference of PTCOG-AO 20251108 2762656/presentations/49977454 Yuki Tominaga Masaki Suga Yushi Wakisaka Yuya Miyasaka Yusuke Kobashi Takahiro Kato Teiji Nishio Tatsuyuki Higashikawa Sunao Tokumaru Michinori Yamamoto Plan Comparisons of Scanned Proton, Passive-scattered Proton, and Passive-scattered Carbon Therapies of Lung Cancer with various Isodose Prescriptions The 5th Annual Conference of PTCOG-AO 20251108 2762656/presentations/49977400 Yuki Tominaga Robabeh Rahimi Yushi Wakisaka Takahiro Kato Masataka Oita Teiji Nishio Systematic Proton Planning Study for Enhanced Lateral Penumbra Control Using Multi-Leaf Collimator and 3D Bolus PTCOG-NA 11th Annual Meeting 20251107 2762656/presentations/50871213 脇坂友詞 冨永裕樹 宮坂友侑也 東川龍之 西尾禎治 スキャニング陽子線治療における呼吸同期照射の適切なゲート幅の検討 第21回日本粒子線治療臨床研究会 20251011 2762656/presentations/50619935 宮坂友侑也 金子崇 想田光 萩原靖倫 佐藤啓 冨永裕樹 脇坂友詞 柴宏博 石澤美優 小藤昌志 岩井岳夫 肝腫瘍に対する炭素線治療とX線SBRTの線量分布の比較-最適な治療法選択のための指標 の探索- 第21回日本粒子線治療臨床研究会 20251011 2762656/presentations/50093082 安井啓祐 林雅雨奈 大塚至流 歳藤利行 櫟原誠也 大鹿理貴 冨永裕樹 馬場大海 松尾勇斗 須釜裕也 片平慶 大町千尋 清水秀年 林直樹 スキャニング陽子線治療におけるガラス線量計を用いた郵送線量監査:多施設パイロット研究 第130回 日本医学物理学会 学術大会 20250920 2762656/presentations/50429027 冨永裕樹 日本粒子線治療技術研究会の紹介 第130回 日本医学物理学会 学術大会「地域をつなぐ」企画 20250919 2762656/presentations/50914554 山田真由美 田野倉亮 冨永裕樹 松本真 堀田雅人 大脇尚篤 広瀬真也 臼井宏樹 遠藤誠 古川晋司 井戸靖司 陽子線スキャニング照射法を用いた肺定位放射線治療に関する基礎的検討の報告 第41回日本診療放射線技師学術大会 20250912 2762656/presentations/49388817 Masato Horita Ryo Tanokura Yuki Tominaga Takahiro Kato Nobukazu Fuwa Validation of four different dose calculation algorithms in a new type of scanned proton therapy system The 67th Annual Meeting & Exhibition of the American Association of Physicists in Medicine 20250726 2762656/presentations/49388805 Yuki Tominaga Yushi Wakisaka Takahiro Kato Masataka Oita Robabeh Rahimi Teiji Nishio Improvements of lateral penumbra at various depth regions in scanned proton treatment system with a multi-leaf collimator: Dose verifications and plan comparisons The 67th Annual Meeting & Exhibition of the American Association of Physicists in Medicine 20250726 2762656/presentations/49388739 Ryo Tanokura, Masato Horita, Yuki Tominaga, Takahiro Kato Introduction of the proton therapy system at Central Japan International Medical Center and report on commissioning up to beam modeling The 129st Scientific Meeting of the Japan Society of Medical Physics 20250410 2762656/presentations/49388727 Masato Horita Ryo Tanokura Takahiro Kato Yuki Tominaga Validation of Beam Data Registration for a New Proton Therapy System The 129st Scientific Meeting of the Japan Society of Medical Physics 20250410 2762656/presentations/49388711 Yushi Wakisaka, Yuki Tominaga, Teiji Nishio Dynamic Collimation with Multi-Leaf Collimator in Scanned Proton Therapy The 129st Scientific Meeting of the Japan Society of Medical Physics 20250410 2762656/presentations/49388689 Yuki Tominaga Yushi Wakisaka Takahiro Kato Masataka Oita Teiji Nishio Experimental validation of 4D dynamic dose calculation method to deal with simulated amplitude changes over time in scanned proton therapy The 129st Scientific Meeting of the Japan Society of Medical Physics 20250410 2762656/presentations/48449819 脇坂 友詞 冨永 裕樹 動的コリメーション陽子線スキャニング治療における MLC開度計算アルゴリズムの検討 第37回日本放射線腫瘍学会学術大会 20241122 2762656/presentations/48449802 先﨑大樹 加藤貴弘 小森慎也 冨永裕樹 原田崇臣 岩﨑美怜 鈴木陽大 關愛馨 渡邊晟哉 佐藤久志 全脳照射におけるScalp-sparingに関する基礎的検討 -照射条件の違いが及ぼす影響- 第37回日本放射線腫瘍学会学術大会 20241122 2762656/presentations/48449708 冨永裕樹 壽賀正城 東川龍之 脇坂友詞 加藤貴弘 小橋佑介 山本祐紀 武田海邦 德丸直郎 山本道法 肺がんに対する陽子線スキャニング治療における辺縁線量処方の治療計画の検討 第37回日本放射線腫瘍学会学術大会 20241122 2762656/presentations/48384407 岩﨑美怜 加藤貴弘 冨永裕樹 小森慎也 先﨑大樹 原田崇臣 田代雅実 佐藤久志 小児全脳全脊髄照射におけるscalp-sparingに関する基礎的検討-VMATとIMPTの比較- 第1回日本放射線医療技術学術大会 20241101 2762656/presentations/46960404 Yuki Tominaga Takahiro Kato Masataka Oita Teiji Nishio Experimental Validations of Two Different 4D Dynamic Dose Calculation Methods for Free Breathing in Proton Pencil Beam Scanning The 66th Annual Meeting & Exhibition of the American Association of Physicists in Medicine 20240721 2762656/presentations/45993744 Shiryu Otsuka Keisuke Yasui Miuna Hayashi Toshiyuki Toshito Chihiro Omachi Hidetoshi Shimizu Masaya Ichihara Hiromi Baba Riki Oshika Yuki Tominaga Naoki Hayashi Verification of the response of radiophotoluminescence dosimeters to proton beams and independent dosimetry audit for scanning beam The 80th Annual Meeting of the Japanese Society of Radiological Technology 20240412 2762656/presentations/45993632 Yudai Tokuhiro Yuki Tominaga Tomomi Uenaka Teiji Nishio Availability of beam log data based dose distribution in proton beam scanning irradiation for patient QA The 127st Scientific Meeting of the Japan Society of Medical Physics 20240412 2762656/presentations/45993616 Kyotaro Tsuzuki Yuki Tominaga Masashi Tomida Yasuhiro Ito Masaya Ichihara Mako Nagata Takeshi Yanagi Yuto Imai Yuta Shibamoto Spot Position Verification for Patient-Specific QA The 127st Scientific Meeting of the Japan Society of Medical Physics 20240412 2762656/presentations/45993582 Yuki Tominaga Takahiro Kato Tomomi Uenaka Yudai Tokuhiro Teiji Nishio Comparisons of dose distributions, irradiation time, and optimization time for various beam parameters in arc proton pencil beam scanning The 127st Scientific Meeting of the Japan Society of Medical Physics 20240412 2762656/presentations/44171814 山本道法 東川龍之 安藤新 加藤晴也 篠原靖宏 冨永裕樹 毛利ひかる 山本浩平 藤野真由美 奥浦陽子 村田陽子 篠原雅岳 井上國彰 坂宗久 平尾佳彦 前立腺がんの寡分割照射の検討 第36回日本放射線腫瘍学会学術大会 20231130 2762656/presentations/43350939 上中ともみ 冨永裕樹 徳弘雄大 西尾禎治 深層学習機能を用いたデノイズイング処理陽子線線量分布モンテカルロ計算法の研究 第36回日本放射線腫瘍学会学術大会 20231130 2762656/presentations/43350921 徳弘雄大, 冨永裕樹, 上中ともみ, 西尾禎治 陽子線スキャニングログ線量分布におけるビームモニタ中心での線量精度低下の検証 第36回日本放射線腫瘍学会学術大会 20231130 2762656/presentations/43340395 冨永裕樹 加藤貴弘 徳弘雄大 笈田将皇 西尾禎治 陽子線スキャニング治療におけるログファイルを用いた推定臨床線量分布の後ろ向き評価 第36回日本放射線腫瘍学会学術大会 20231130 2762656/presentations/43315231 Yuki Tominaga Masataka Oita Takahiro Kato Experimental validation of gated proton pencil beam scanning with 4D dynamic dose calculations 第125回日本医学物理学会 学術大会 20230414 2762656/presentations/43340122 冨永裕樹, 壽賀正城, 武田海邦, 毛利ひかる, 山本祐紀, 櫻井勇介, 笈田将皇, 赤城卓, 德丸直郎, 山本道法 肺癌の陽子線ペンシルビームスキャニング法に対する自由呼吸および呼吸同期の線量評価 第35回日本放射線腫瘍学会学術大会 20221110 2762656/presentations/43340186 Yuki Tominaga, Masataka Oita, Junya Miyata, Yusuke Sakurai, and Takashi Akagi Efficient automated patient specific quality assurance using log files and a commercial treatment planning system in proton pencil beam scanning 第123回日本医学物理学会学術大会 20220414 2762656/presentations/49136562 冨永裕樹 ログファイルを用いた患者 QA ワークフローの効率化 第 2 回日本粒子線治療技術研究会 20211204 2762656/presentations/43340203 冨永裕樹 壽賀正城 武田海邦 櫻井勇介 笈田将皇 赤城卓 德丸直郎 山本道法 Dosimetric comparison of lung cancer patients for three irradiation methods in proton therapy 肺癌の陽子線治療における2種類の拡大ビーム法とMLCスキャニング法の線量分布比較 第34回日本放射線腫瘍学会学術大会 20211112 2762656/presentations/43340223 Yuki Tominaga Masataka Oita Kohei Yamamoto Hikaru Mouri Yasuhiro Shinohara Akira Ando Yusuke Sakurai Tatsuyuki Nishikawa 4D dynamic doseを用いたペンシルビームスキャニング法の運用フローの検討 第17回日本粒子線治療臨床研究会 20211016 2762656/presentations/43340616 Shun Fujiwara Yuki Tominaga Takayasu Haruna Masataka Oita Spot characteristic stability for utilizing the XRV-2000 scintillation detector in proton pencil beam scanning PTCOG59 20210604 2762656/presentations/43340238 Yuki Tominaga Masataka Oita Junya Miyata Yusuke Sakurai Takashi Akagi Experimental validation of model-based 4D dynamic doses calculated by a commercial treatment planning system in proton pencil beam scanning The 59th Annual Conference of the Particle Therapy Co-Operative Group 20210604 2762656/presentations/43340506 Takayasu Haruna Masataka Oita Yuki Tominaga Mitsutoshi Tada Masashi Yamanaka Tetsunori Matsuda Masahiro Kuroda Ion recombination and polarity correction factors for different types of ionization 第121回日本医学物理学会学術大会 20210415 2762656/presentations/43340270 Yuki Tominaga Masataka Oita Junya Miyata Yusuke Sakurai Shuichi Harada Takashi Akagi Improvements of lateral penumbra widths for various optimized parameters in proton pencil beam scanning with and without a multi-leaf collimator 第121回日本医学物理学会学術大会 20210415 2762656/presentations/43340316 Yuki Tominaga Masataka Oita Junya Miyata Yusuke Sakurai Masashi Yamanaka Mitsutoshi Tada Tetsunori Matsuda Shuichi Harada Takashi Akagi Clinical beam commissioning results of proton pencil beam scanning system using multi leaf collimator. 第33回日本放射線腫瘍学会学術大会 20201001 2762656/presentations/43340384 Yuki Tominaga, Masataka Oita, Junya Miyata, Yusuke Sakurai, Masashi Yamanaka, Mitsutoshi Tada, Tetsunori Matsuda, Shuichi Harada, and Takashi Akagi Improvements dose calculations accuracy in the proton pencil beam scanning treatment planning system. equipped with a commercial Monte Carlo algorithm 第119回日本医学物理学会学術大会 20200515 2762656/presentations/43340428 Yuki Tominaga Masataka Oita Takahiro Waki Hiroki Ihara Dongcun Jin Yasue Niwa Masahiro Kuroda Mamoru Fujishima Tetsunori Matsuda Dose volume comparison of raster scanning proton therapy and VMAT for high-risk prostate cancer 第32回日本放射線腫瘍学会学術大会 20191120 2762656/presentations/43340650 Yuki Tominaga Masataka Oita Masahiro Kuroda Takahiro Waki Tetsunori Matsuda 陽子線ペンシルビームスキャニング照射のスポット位置エラー発生時における線量分布の変化の検討 第16回日本粒子線治療臨床研究会 20190922 2762656/presentations/43340681 Yuki Tominaga Masataka Kuroda Takashi Akagi Shuichi Harada Masashi Yamanaka Mitsutoshi Tada Masahiro Kuroda Tetsunori Matsuda Commissioning of a treatment planning system, RayStation, for proton pencil beam scanning at Tsuyama Chuo Hospital 第117回日本医学物理学会学術大会 20190410 2762656/presentations/45993540 Takahiro Waki Yuki Tominaga Yasue Niwa Hiroki Ihara Dongcun Jin Soichi Sugiyama Takahiro Kawabata Kuniaki Katsui Mamoru Fujishima Susumu Kanazawa Proton therapy for prostate cancer: Comparison of acute toxicity between moderate-hypo and conventional fraction ESTRO 38 20190400 2762656/presentations/45993526 春名孝泰，綱澤勝之，伊田和司，山本崇裕，冨永裕樹，田村瑞希，多田光寿，平井諒太，山中将史，張智凱 陽子線スキャニングDaily QAにおけるカメラファントムを用いたビーム位置精度管理 第14回中四国放射線医療技術フォーラム 20181103 2762656/presentations/43340472 Yuki Tominaga Masataka Oita Takahiro Waki Ryota Hirai Masashi Yamanaka Mitsutoshi Tada Takayasu Haruna Mizuki Tamura Takahiro Yamamoto Kazushi Ida Katsuyuki Tsunazawa Masahiro Kuroda Dongcun Jin Yasue Niwa Tetsunori Matsuda Dose volume comparison of spot scanning proton therapy and passive method for prostate cancer 第31回日本放射線腫瘍学会学術大会 20181011 2762656/presentations/43350899 Takashi Akagi Yuki Tominaga Comparison of conversion tables for CT-number to water-equivalent thickness between RayStation and the poly-binary calibration in particle therapy 第116回日本医学物理学会 20180916 2762656/presentations/43350874 Yukako Kishigami Takashi Akagi Katsuyuki Tsunazawa Yuki Tominaga Mitsutoshi Tada Masashi Yamanaka Masahiko Koizumi Effect of range-shifter on dose distributions in proton spot-scanning fields 第116回日本医学物理学会学術大会 20180916 2762656/presentations/43350841 Yuki Tominaga Mitsutoshi Tada Katsuyuki Tsunazawa Takahiro Yamamoto Yoshiyuki Yamada Shuichi Harada Takashi Akagi Yusuke Sakurai Tetsunori Matsuda Commissioning status of Tsuyama Chuo Hospital proton beam center 第112回日本医学物理学会学術大会 20160909 2762656/presentations/43350810 Mitsutoshi Tada Yuki Tominaga Katsuyuki Tsunazawa Takahiro Yamamoto Yoshiyuki Yamada Shuichi Harada Takashi Akagi Yusuke Sakurai Tetsunori Matsuda An initial report of a new proton therapy machine commissioning in uniform-scan: the principle and verification 第112回日本医学物理学会学術大会 20160909 2762656/books_etc/48712244 橘 昌幸, 岩元 新一郎, 奥村 雅彦, 冨永 裕樹 放射線治療技術学 (診療放射線技術 テキストシリーズ) 共立出版 20241200 2762656/books_etc/46083735 粒子線治療装置の物理・技術的QAシステムガイドライン(粒子線 QA2016)追補版[2020年] 20201200 2762656/books_etc/43426529 冨永裕樹 ラスタースキャニング法を用いた陽子線治療の臨床状況と今後の展望 月刊新医療 46 (6), 98-101 20190600 山中将史 多田光寿 春名孝泰 平井諒太 張智凱 田村瑞希 山本崇裕 伊田和司 冨永裕樹 井原弘貴 金東村 丹羽康江 脇隆博 松田哲典 津山中央病院医学雑誌 優秀論文賞 前立腺がんの陽子線治療における前斜方向ビームのロバスト性の評価 20201200 春名孝泰 冨永裕樹 山中将史 多田光寿 松田哲典 石川勉 弓狩一晃 明比直樹 井原弘貴 金東村 脇隆博 丹羽康江 藤島護 津山中央病院医学雑誌 優秀論文賞 前立腺癌患者の陽子線治療におけるハイドロゲルスペーサ留置の有用性の検討 20191200 冨永 裕樹 笈田将皇 張智凱 平井諒太 山中将史 多田光寿 春名孝泰 田村瑞希 山本崇裕 伊田和司 綱澤勝之 松田哲典 黒田昌宏 金東村 脇隆博 丹羽康江 藤島 護 津山中央病院医学雑誌 優秀論文賞 前立腺患者の陽子線スポットスキャニングと従来法との線量分布比較 20181200