光計測システムおよびそれに用いられる携帯型光計測装置及びその使用方法

光計測システムおよびそれに用いられる携帯型光計測装置及びその使用方法


ホルダおよびそれを用いた光計測装置

ホルダおよびそれを用いた光計測装置


光生体測定装置およびそれに用いられるホルダ配置支援システム

光生体測定装置およびそれに用いられるホルダ配置支援システム


吸光度原点標準器およびその使用方法

吸光度原点標準器およびその使用方法


光脳機能イメージング装置

光脳機能イメージング装置


光生体測定装置及びホルダ

光生体測定装置及びホルダ


脳機能情報モニタリング装置

脳機能情報モニタリング装置


光計測装置およびその送受光プローブ配線方法

光計測装置およびその送受光プローブ配線方法


信号解析装置および信号解析方法

信号解析装置および信号解析方法


近赤外光による生体光計測方法及び装置

近赤外光による生体光計測方法及び装置


光生体測定装置およびホルダ

光生体測定装置およびホルダ


核磁気共鳴イメージング装置

核磁気共鳴イメージング装置


MRI装置の電磁波シールド

MRI装置の電磁波シールド


MRイメージング装置のバイポーラグラジエントの調整法

MRイメージング装置のバイポーラグラジエントの調整法


MRI装置の傾斜磁場引加方法

MRI装置の傾斜磁場引加方法


A photobiological measurement apparatus 1 may include a second received light quantity information calculation unit 33 for calculating measurement data relating to cerebral activity, a data display controller for displaying the measurement data for a specified area of a subject's brain, is characterized: is being provided with a reference light-receiving probe 14, which is disposed at a position separated by a first setting distance r1 from the light-transmitting prober 12 that is shorter than a second setting distance r2, and a first received light quantity information calculating unit 32, which calculates skin blood flow data relating to the skin blood flow using first received light quantity information ΔA1 from the light transmitting probe 12 to the reference light-receiving probe 14, and in displaying the skin blood flow data at a specified position of the subject's scalp by indicating the measurement position on the subject's scalp and displaying the skin blood data.


光生体測定システム及びその使用方法

光生体測定システム及びその使用方法


OPTICAL BIOMETRIC SYSTEM AND METHOD FOR USING SAME

An optical biometric system (1) is characterized by being provided with: a first received light amount information acquisition unit (25) which acquires skin blood flow data relating to a skin blood flow in a wide range of the scalp of a subject by controlling the transmission/reception of light to/from a light transmission/reception unit (30) using a wide-range control table; and a selection control table creation unit (24) which causes a storage unit (23) to store a selection control table for acquiring X pieces of first received light amount information (ΔA1) selected from among N pieces of first received light amount information (ΔA1), and in that when acquiring multiple pieces of measurement data relating to the brain activity in a predetermined range of the brain of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using a control table, a light transmission/reception control unit (21) acquires skin blood flow data relating to a skin blood flow in a predetermined position of the scalp of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using the selection control table.


An optical biometric system (1) is characterized by being provided with: a first received light amount information acquisition unit (25) which acquires skin blood flow data relating to a skin blood flow in a wide range of the scalp of a subject by controlling the transmission/reception of light to/from a light transmission/reception unit (30) using a wide-range control table; and a selection control table creation unit (24) which causes a storage unit (23) to store a selection control table for acquiring X pieces of first received light amount information (∆A1) selected from among N pieces of first received light amount information (∆A1), and in that when acquiring multiple pieces of measurement data relating to the brain activity in a predetermined range of the brain of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using a control table, a light transmission/reception control unit (21) acquires skin blood flow data relating to a skin blood flow in a predetermined position of the scalp of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using the selection control table.


A photobiological measurement apparatus (1), which is provided with a second received light quantity information-calculating unit (33) for calculating measurement data relating to cerebral activity and a data display control unit (34) for displaying the measurement data for a specified area of a subject's brain, is characterized: in being provided with a reference light-receiving probe (14), which is disposed at a position separated by a first setting distance (r1) from the light-transmitting probe (12) that is shorter than a second setting distance (r2), and a first received light quantity information-calculating unit (32), which calculates skin blood flow data relating to the skin blood flow using first received light quantity information (ΔA1) from the light-transmitting probe (12) to the reference light-receiving probe (14); and in displaying the skin blood flow data at a specified position of the subject's scalp by indicating the measurement position on the subject's scalp and displaying the skin blood flow data.


An optical measuring system comprises a control device and an optical meter. The optical meter comprises a first case, a first controller for controlling light emitters for irradiating a patient with light and light receivers for receiving light from the patient to obtain measurement data regarding a cerebral activity, and a first transmitter and receiver for transmitting the measurement data to the control device. The control device comprises a second case removably attached to the first case, a display and input device on a surface of the second case, a second transmitter and receiver for receiving the measurement data from the optical meter, and a second controller for controlling the display and input device to display the measurement data from the optical meter. The second case can be attached on a top face of the first case when the first case is placed on a table.


A light measurement system (1), which is equipped with a tablet control unit (10) and a light measurement unit (40). The light measurement unit (40) is provided with: a first frame (41); a light measurement unit control section (51), which obtains measurement data relating to cerebral activity by controlling multiple light-sending means (12) that irradiate light on a subject and multiple light-receiving means (13) that receive light emitted from the subject; and a communication section (46) capable of communicating with the tablet control unit (10). The tablet control unit (10) is provided with: a second frame (11) capable of being attached to and detached from the first frame (41); a display-plus-input section (26) formed on the surface of the second frame (11); a communication section (6) capable of communicating with the light measurement unit (40); and a tablet control section (24) that displays the measurement data obtained by the light measurement unit control section (51) on the display-plus-input section (26).


HOLDER AND LIGHT MEASURING DEVICE USING SAID HOLD

This holder (160) has at least two probe mounting units (171). Light-transmitting probes (12) which irradiate light from the tip, or light receiving probes (13) which receive light from the tip, are inserted into the probe mounting units (171), and the holder (160) is mounted on the patient's head. This holder is provided with a linear trunk unit (162) extending in a first direction, and at least two linear branches (161) extending in a second direction different from the first direction, and the probe mounting units (171) are formed at the end of the branches (161).


PROBE HOLDING TOOL AND OPTICAL MEASUREMENT DEVICE USING SAME

Provided is a probe holding tool with which a plurality of light-delivery probes and a plurality of light-receiving probes can be attached to a holder in a short time. A probe holding tool (50) used in an optical measurement device (1) comprising: a plurality of light-delivery probes (12) which irradiate a subject with light; a plurality of light-receiving probes (13) which receive light that is emitted from the subject; a light-delivery transmission path group (30) which comprises a plurality of light-delivery transmission paths (30a); and a light-receiving transmission path group (40) which comprises a plurality of light-receiving transmission paths (40a), wherein the probe holding tool (50) is characterized in being provided with a securing member (60) which is capable of holding the light-delivery probes (12) with light-delivery probe holding means (60a) and which is capable of holding the light-receiving probes (13) with light-receiving probe holding means (60b).


HOLDER AND LIGHT MEASUREMENT DEVICE EMPLOYING SAME

Provided is a holder which comprises at least two probe mount portions into which a light-transmitting probe for emitting light from the tip thereof or a light-receiving probe for receiving light through the tip thereof is inserted from above and is to be put on the head of a subject, the holder being characterized by further comprising: a linear backbone portion that extends in a first direction that is perpendicular to the above-described direction from above; and at least two linear branch portions that extend in a second direction that is perpendicular to the above-described direction from above and is different from the first direction, wherein the lower end portions of the probe mount portions protrude from the lower surface of the backbone portion or a branch portion and are tapered.


)A holder (160) mounted on the head of a subject, and comprising at least two probe mounting units (161a) into each of which either a light transmission probe (12) projecting light from the leading end thereof or a light receiving probe (13) receiving light via the leading end thereof is inserted from above, is characterized by: further comprising a linear trunk unit (162) that extends in a first direction that is orthogonal to the top-down direction, and at least two linear branch units (161) that extend in a second direction that is orthogonal to the top-down direction and is different from the first direction; and by lower end parts of the probe mounting units (161a) protruding and tapering from the lower surface of either the trunk unit (162) or the branch units (161).


HOLDER AND LIGHT MEASURING DEVICE USING SAME

Provided is a holder (60) which comprises at least two probe mount portions (61a) and is mounted to the head of a subject by inserting a light-transmitting probe (12) for applying light from the tip thereof or a light-receiving probe (13) for receiving light from the tip thereof in the probe mount portion (61a), the holder characterized by being provided with a linear backbone portion (62) extending in a first direction, at least two linear branch portions (61) extending in a second direction different from the first direction, and a disposition reference point (63a) disposed so as to match a first specific point, the first specific point being set in the head of the subject.


Provided is a light measurement device capable of obtaining reproducible measurement data without the necessity for bringing a subject into the state of performance of a task such as finger movement many times, the measurement data having no variation and less affected by Mayer Wave and the like caused by respiration, blood pressure, and the like other than the performance of the task. Specifically provided is a light measurement device (1) which is provided with a light transmission/reception unit controller (4) for acquiring received light amount information relating to a measurement site of the brain of a subject and a calculation unit (31) for calculating the amount of change in hemoglobin concentration, and obtains measurement data indicating the change with lapse of time in the variation amount of hemoglobin concentration during the execution of a task period in which the subject is being continuously loaded, the light measurement device being characterized by being provided with a biomonitor (60) which is disposed on the surface of the skin of the subject and detects biological information relating to the heartbeat, blood pressure, or respiration of the subject, a biomonitor control unit (32) for obtaining the biological information from the biomonitor (60), and a task period start time determination unit (35) for determining the start time of the task period on the basis of the biological information.


OPTICAL MEASUREMENT SYSTEM, PORTABLE OPTICAL MEASUREMENT DEVICE USED THEREIN, AND REHABILITATION PLANNING METHOD USING SAME

Disclosed is an optical measurement system (1) provided with a main optical measurement device (10) and a portable optical measurement device (40). The optical measurement system (1) is characterized in that the portable optical measurement device (40) is provided with a second case (41) portable by the subject, C second light sending means (12) for illuminating the subject, D second light receiving means (13) for receiving light emitted from the subject, a second holder (60) worn on the head of the subject and having at least (C+D) through holes therein, a control unit (51) for acquiring measurement data relating to a brain activity while controlling the second light sending means (12) and the second light receiving means (13), and a communication unit (46) capable of communicating with the main optical measurement device (10), that (C+D) > (A+B) is satisfied, and that the communication unit (46) of the portable optical measurement device (40) transmits the measurement data acquired by the control unit (51) of the portable optical measurement device (40) to the main optical measurement device (10).


Optical measurement system, portable optical measurement device used therein, and rehabilitation planning method using same

An optical measurement system has main and portable optical measurement devices. The main optical measurement device includes Ath first light sending devices and Bth first light receiving devices. The portable optical measurement device includes Cth second light sending devices for illuminating a subject, Dth second light receiving devices receiving light from the subject, a holder worn on a head of the subject and having through holes therein, a control unit acquiring measurement data relating to a brain activity while controlling the second light sending and receiving devices, and a communication device communicating with the main optical measurement device. (C+D)<(A+B) is satisfied. The communication device of the portable optical measurement device transmits the measurement data acquired by the control unit of the portable optical measurement device to the main optical measurement device.


Disclosed is an optical measurement system (1) provided with a main optical measurement device (10) and a portable optical measurement device (40). The optical measurement system (1) is characterized in that the portable optical measurement device (40) is provided with a second case (41) portable by the subject, C second light sending means (12) for illuminating the subject, D second light receiving means (13) for receiving light emitted from the subject, a second holder (60) worn on the head of the subject and having at least (C+D) through holes therein, a control unit (51) for acquiring measurement data relating to a brain activity while controlling the second light sending means (12) and the second light receiving means (13), and a communication unit (46) capable of communicating with the main optical measurement device (10), that (C+D)>(A+B) is satisfied, and that the communication unit (46) of the portable optical measurement device (40) transmits the measurement data acquired by the control unit (51) of the portable optical measurement device (40) to the main optical measurement device (10).


Standard device for origin of light absorbance and method of using the same

A device for origin of light absorbance used in an optical measuring instrument for measuring light absorption characteristics of a light diffusion sample. The device includes a light transmission terminal configured to irradiate a measurement light onto the light diffusion sample at a point of incidence of the light diffusion sample and a light diffusion plate through the interior of which the measurement light can be diffused and transmitted. A light receiving terminal is configured to receive the measurement light from the light diffusion sample for measurement at a point of detection of the light diffusion sample that is separate from the point of incidence. Optionally, the device can include a cleaning unit that cleans the light transmission terminal and light receiving terminal.


Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz


An MR imaging method using NMR phenomenon and including the following steps: emitting an excitation RF pulse and a plurality of refocus RF pulses to an object to generate a plurality of spin echo signals successively; applying slice selecting gradient field pulses simultaneously with the RF pulses, respectively, for selecting slice planes; switching polarity of reading gradient field pulses a plurality of times during each of periods between the plurality of refocus RF pulses to generate a plurality of gradient echo signals distributed across one of the spin echo signals; applying, during each of the periods between the refocus RF pulses, a phase-encoding gradient field pulse providing a different integrated phase encode amount, to each of a plurality of echo signals (hereinafter called the same group of echo signals) generated upon lapse of the same time period from a point of time at which each of the spin echo signals is generated; applying the reading gradient field pulses in timed relationship with generation of the spin echo signals; repeating a pulse sequence consisting of the above steps while varying the integrated phase encode amount; and processing data acquired from the same group of echo signals to arrange the data in one of different k spaces according to the integrated phase encode amount applied to each of the echo signals, and to reconstruct a plurality of slice images based on the k spaces, respectively.


MR imaging method and apparatus utilizing gradient and spin echo technique

An MR imaging method uses NMR phenomenon, and includes a number of steps. These steps include emitting an excitation RF pulse and a plurality of refocus RF pulses to an object to generate a plurality of spin echo signals successively, and applying slice selecting gradient field pulses simultaneously with the RF pulses, respectively, for selecting slice planes. A polarity of reading gradient field pulses is switched a plurality of times to generate a plurality of gradient echo signals. A phase-encoding gradient field pulse, providing a different integrated phase encode amount, is applied to each of a plurality of echo signals generated after each of the spin echo signals is generated. The reading gradient field pulses are applied in timed relationship with generation of the spin echo signals. A pulse sequence consisting of the above steps is repeated while varying the integrated phase encode amount. Data acquired from the same group of echo signals is processed to arrange the data in one of different k spaces to reconstruct a plurality of slice images based on the k spaces, respectively.


An MR imaging apparatus using NMR phenomenon includes a main magnet, a first to a third gradient field coils, a RF coil, a RF emitter, a slice-selecting gradient field pulse generator, a reading gradient field pulse generator, a phase-encoding gradient field pulse generator and a data processor. The phase-encoding gradient field pulse generator effects phase-encoding, such that phase-encoding gradient field pulses have varied strengths to vary integrated phase encode amounts of spin echo signals from a positive (or negative) value through zero to a negative (or positive) value according to an order of generation; to vary, in a reversed direction, integrated phase encode amounts of each group of gradient echo signals having the same place in an order of generation thereof within respective pulse intervals; and to give the integrated phase encode amounts of each group of gradient echo signals greater absolute values than the integrated phase encode amounts of the spin echo signals.


Apparat zur Bilderzeugung mittels magnetischer Resonanz


An MR imaging apparatus using NMR phenomenon includes a main magnet for generating a uniform static magnetic field in an imaging space; a first to a third gradient field coils for generating three types of gradient field pulses with magnetic strengths varying in three orthogonal directions in the imaging space; a RF coil for emitting an excitation RF pulse and a plurality of refocus RF pulses and detecting echo signals; a RF emitter for modulating, with a predetermined carrier frequency, and successively emitting the excitation RF pulse and refocus RF pulses with predetermined timing through the RF coil; a slice-selecting gradient field pulse generator for generating the slice-selecting gradient field pulses through the first gradient field coil for selecting slice planes, in timed relationship with the excitation RF pulse and the refocus RF pulses; a phase-encoding gradient field pulse generator for generating the phase-encoding gradient field pulses through the second gradient field coil in timed relationship with the echo signals, the phase-encoding gradient field pulses being varied for the respective echo signals; a reading gradient field pulse generator for generating the reading gradient field pulses through the third gradient field coil in timed relationship with the echo signals; a data collector for detecting, with a predetermined frequency (reference frequency), the echo signals detected by the RF coil, and collecting data therefrom; a phase detector for determining phase differences of echo peaks in the echo signals with respect to the reference frequency, respectively; a rotating device for rotating the data collected from the echo signals based on the phase differences to connect phases of the echo signals to be continuous; and a data processor for reconstructing a sectional image based on the data rotated.


An MR imaging apparatus using NMR phenomenon includes a main magnet for generating a uniform static magnetic field in an imaging space, a first to a third gradient field coils, an RF coil for emitting an excitation RF pulse and a plurality of refocus RF pulses and detecting echo signals, an RF emitter for modulating and emitting the excitation RF pulse and refocus RF pulses with predetermined timing through the RF coil, and a slice-selecting gradient field pulse generator. A phase-encoding gradient field pules generator and a reading gradient field pulse generator are provided, along with a data collector for detecting, with a predetermined frequency (reference frequency), the echo signals detected by the RF coil, and collecting data therefrom. A phase detector determines phase differences of echo peaks in the echo signals with respect to the reference frequency, respectively. A rotating device rotates the data collected from the echo signals based on the phase differences to connect phases of the echo signals to be continuous, and a data processor is provided for reconstructing a sectional image based on the rotated data.


Magnetic resonance imaging method and apparatus

A magnetic resonance imaging method for emitting a single excitation RF pulse and then a plurality of refocusing RF pulses to an examinee to generate echo signals successively. This method includes the steps of emitting the single excitation RF pulse and then the plurality of refocusing RF pulses to the examinee to generate echo signals successively; applying slice selecting gradient field pulses for selecting a slice plane simultaneously with the excitation RF pulse and the refocusing RF pulses; applying phase encoding gradient field pulses for phase-encoding a key echo signal and subsequent echo signals among the echo signals resulting from the above steps, without applying the phase encoding gradient field pulses for phase-encoding echo signals generated before the key echo signal, the key echo signal being a signal having collected data of lines in and adjacent a center region of a raw data space of the slice plane; and applying reading gradient field pulses in respect of the echo signals for which the phase encoding gradient field pulses have been applied.


Verfahren und Vorrichtung zur Bilderzeugung mittels magnetischer Resonanz