WO2014102929A1 - 線量分布測定装置 - Google Patents
線量分布測定装置 Download PDFInfo
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- WO2014102929A1 WO2014102929A1 PCT/JP2012/083641 JP2012083641W WO2014102929A1 WO 2014102929 A1 WO2014102929 A1 WO 2014102929A1 JP 2012083641 W JP2012083641 W JP 2012083641W WO 2014102929 A1 WO2014102929 A1 WO 2014102929A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1075—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/10—Luminescent dosimeters
- G01T1/105—Read-out devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/204—Measuring radiation intensity with scintillation detectors the detector being a liquid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1075—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus
- A61N2005/1076—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus using a dummy object placed in the radiation field, e.g. phantom
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
Definitions
- the present invention relates to a dose distribution measuring apparatus for measuring a dose distribution of a particle beam used for, for example, a particle beam therapy for cancer.
- the radiation irradiation apparatus such as an accelerator and to confirm the beam energy distribution and shape which are different for each patient, it is necessary to measure the dose distribution on a daily basis as quality control of the radiation beam.
- Patent Document 1 by using an aquarium that simulates a human body and an ionization chamber equipped with a drive device so that the position in water can be changed, the ionization chamber is scanned, so that the The dose distribution is measured. Therefore, a great deal of time and effort are required even for a single dose distribution measurement. In addition, since confirmation by dose distribution measurement is required every time the beam condition is changed, there is a limit in improving the number of patients that can be treated per irradiation apparatus, that is, the operating rate of the treatment apparatus.
- a solid phantom with a high visible light transmittance contains a substance that emits fluorescence when excited by radiation, and the fluorescence intensity is measured by changing the light emitted by radiation irradiation into an electrical signal using a CCD camera or the like.
- the technology to do is described.
- Patent Document 3 discloses a scintillator unit composed of a liquid scintillator that emits light by irradiating a proton beam, and a particle composed of a CCD camera that is an imaging unit that images the scintillator unit from a direction perpendicular to the incident direction of the proton beam.
- a radiation dose distribution measuring device is described. It is described that, by using this measuring apparatus, a plurality of horizontal cross sections are simultaneously measured along the incident particle beam direction, and the two-dimensional distribution is reconstructed for each cross section, whereby a three-dimensional distribution is finally obtained. Has been.
- This scanning irradiation method is a method in which a particle beam called a thin pencil beam is moved in a two-dimensional direction perpendicular to the beam traveling direction to form a two-dimensional irradiation distribution perpendicular to the beam traveling direction. Further, since the position where the absorbed dose of the particle beam reaches a peak (referred to as a Bragg peak) is determined by the energy of the particle beam, the irradiation position in the beam traveling direction is changed by changing the energy of the particle beam. In the scanning irradiation method, as described above, a three-dimensional irradiation field is formed by moving the pencil beam and changing the energy.
- Patent Documents 1 to 3 which are techniques for measuring the dose distribution when the irradiation position does not change with time, are used.
- it cannot be directly applied to the dose distribution measurement of the scanning irradiation method, or there is a problem that it takes a lot of time to measure the dose distribution of the scanning irradiation method.
- the present invention has been made to solve the above-mentioned problems, and provides a particle beam dose distribution measuring apparatus capable of measuring a particle beam dose distribution by a scanning irradiation method in a short time with a simple configuration. With the goal.
- the particle beam is applied to the two-dimensional irradiation region at the depth position of the irradiation target corresponding to the energy.
- a water phantom having a liquid containing a fluorescent material that emits light by irradiating and having an incident window for entering the particle beam, and the center of irradiation of the particle beam of the water phantom around the water phantom At least two cameras arranged to image light emission of a liquid containing a fluorescent material on a plane perpendicular to the axis, and a camera image for processing images of the at least two cameras
- the camera calibration parameter storage unit that stores the camera calibration parameters of each of the at least two cameras, and the camera calibration parameters stored in the camera calibration parameter storage unit.
- a spot position calculation unit for calculating a spot position, which is an irradiation position when the particle beam is stopped, from the camera image data processed by the camera image processing unit, and pencil beam dose distribution data for storing the PDD and OCR data of the pencil beam
- the irradiation dose distribution at each spot position is calculated by calculating the irradiation dose distribution at the spot position calculated by the spot position calculation unit using the storage unit and the PDD and OCR data stored in the pencil beam dose distribution data storage unit.
- a dose distribution measuring apparatus capable of measuring a dose distribution in a short time with a simple configuration.
- FIG. 1 is a block diagram showing a schematic configuration of a particle beam irradiation apparatus including a dose distribution measuring apparatus 1 according to Embodiment 1 of the present invention.
- the particle beam 4 is irradiated from the irradiation system 2 toward the water phantom 3 constituted by a water tank.
- a liquid 5 (generally called a liquid scintillator) containing a fluorescent material that absorbs a particle beam and emits light is placed.
- the wall of the water phantom 3 is made of a transparent material that transmits light, such as acrylic.
- an incident window 6 made of a material that hardly absorbs particle beams, such as acrylic, is provided at a portion where the particle beam 4 is incident. In order to reduce the absorption of the particle beam, the incident window 6 may be thinner than other portions.
- Two cameras, a camera 7 and a camera 8, are arranged around the water phantom 3. The two cameras are arranged on a circle C centered on the irradiation central axis CA, for example, on a plane perpendicular to the irradiation central axis CA of the particle beam 4, and an image centered on the irradiation central axis CA. Image.
- a dose distribution calculation / evaluation apparatus 10 calculates and evaluates a dose distribution using camera images captured by the camera 7 and the camera 8.
- the dose distribution calculation / evaluation apparatus 10 uses a camera image processing unit 11 for processing a camera image and a camera image processed by the camera image processing unit 11 using the camera calibration parameters stored in the camera calibration parameter storage unit 17.
- a spot position calculation unit 12 that calculates a spot position
- a dose addition unit 13 that calculates and adds a dose at each spot position using a pencil beam dose distribution stored in a pencil beam dose distribution data storage unit 16, and a dose addition unit 13, the irradiation region dose distribution data stored in the irradiation region dose distribution data storage unit 15 storing the irradiation region dose distribution data planned in the treatment planning device 20,
- the dose distribution evaluation part 14 which compares and evaluates is provided.
- the irradiation system 2 moves a particle beam 4 called a thin pencil beam in a two-dimensional direction perpendicular to the beam traveling direction to form a two-dimensional irradiation distribution perpendicular to the beam traveling direction.
- the beam traveling direction is the Z direction and the two directions perpendicular to Z, that is, the direction in which the beam is moved are the X direction and the Y direction.
- the irradiation system 2 is provided with an X direction deflection electromagnet and a Y direction deflection electromagnet.
- the particle beam 4 is irradiated by the irradiation system 2 while moving and stopping repeatedly.
- the particle beam 4 stops at a certain irradiation position (hereinafter referred to as a spot position) and the irradiation dose at the spot position becomes the planned irradiation dose, the particle beam 4 is moved to the next spot position, and the next Irradiate until the planned irradiation dose at the spot position is reached.
- a particle beam 4 of a certain energy and a planned irradiation dose distribution, that is, a two-dimensional dose distribution is formed in the irradiation region at the Bragg peak position corresponding to the energy, that is, the depth position in the beam traveling direction.
- the two-dimensional irradiation dose distribution planned in the irradiation region at a different depth position is formed by changing the particle beam energy.
- a planned irradiation dose distribution is finally formed in the three-dimensional irradiation region.
- Such an irradiation method will be referred to herein as a spot scanning irradiation method.
- the control data of the accelerator system controller 22 for controlling the accelerator not to be transmitted is obtained and transmitted to the irradiation system controller 21 and the accelerator system controller 22.
- the particle beam 4 is moved and stopped repeatedly according to the control data of the irradiation system controller 21 and the control data of the accelerator system to irradiate the affected area of the patient.
- the dose distribution in the affected area of the patient is directly measured during the treatment. Can not do it.
- the dose distribution measuring apparatus 1 is used in order to confirm whether or not the planned dose distribution is formed when irradiation is performed with these control data, prior to treatment.
- a dose distribution measuring method by the dose distribution measuring apparatus 1 according to the first embodiment of the present invention will be described with reference to FIGS.
- the dose distribution characteristic of the pencil beam is measured.
- a PDD Percent Depth Dose, percentage in depth
- OCR Off Center Axis Ratio
- OCR can be measured by a conventionally known finger-type dosimeter or the like
- PDD can be measured by Advanced Markus or the like. Or it can also measure by the method by Embodiment 5 mentioned later.
- An example of the PDD is shown in FIG. 2A, and an example of the OCR is shown in FIG.
- the particle beam 4 is irradiated to the water phantom 3 by the spot scanning irradiation method with the structure of FIG. That is, the accelerator and irradiation system 2 are controlled by the control data of the accelerator system controller 22 and the control data of the irradiation system controller 21 at each spot position, and the particle beam 4 is irradiated at each spot position.
- the particle beam 4 is repeatedly moved and stopped in the two-dimensional direction perpendicular to the traveling direction in the two-dimensional irradiation region at the depth position of the water phantom corresponding to the energy.
- the particle beam 4 is irradiated onto the three-dimensional irradiation region.
- the camera 7 and the camera 8 image the light emission of the liquid 5 containing the fluorescent material.
- the point with the highest luminance in the captured image is extracted.
- the PDD and OCR data stored in the pencil beam dose distribution data storage unit 16 is used to calculate a three-dimensional dose distribution obtained by irradiation at the spot position.
- camera external parameters attachment position and orientation
- camera internal parameters image center, distortion, etc.
- camera external parameters attachment position and orientation
- camera internal parameters image center, distortion, etc.
- a calibration point with a known three-dimensional coordinate position is embedded in the water phantom, and the calibration point can be set in a treatment room coordinate system centered on the isocenter with a laser pointer or the like in the treatment room.
- the external parameters and internal parameters of each camera are calculated.
- the calculated external parameters and internal parameters which are calibration parameters for each camera, are stored in the camera calibration parameter storage unit 17.
- n is the number of spot positions to be irradiated.
- the spot position calculation unit 12 calculates a three-dimensional position using the position with the highest luminance as the spot position, and calculates the peak dose from the luminance (ST4).
- the camera calibration parameters stored in the camera calibration parameter storage unit 17 are used. Further, when the luminance and absorbed dose are in a non-linear relationship, if the non-linear relationship between the luminance and the absorbed dose is tabulated as a correspondence table, the luminance can be easily converted into the absorbed dose.
- the spot position calculation unit 12 calculates a three-dimensional position using the position with the highest luminance as the spot position, and calculates the peak dose from the luminance (ST4).
- the irradiation dose distribution obtained by the addition becomes a measured value of the irradiation dose distribution.
- An example of the obtained data is shown in FIG. FIG.
- FIG. 5 is a diagram showing a two-dimensional distribution in the Z direction and the X direction at a Y position near a certain center, that is, a 2.5-dimensional distribution diagram.
- a three-dimensional irradiation dose distribution having a value for each point of an X, Y, Z three-dimensional volume is obtained.
- the dose distribution evaluation unit 14 compares and evaluates the measurement value of the three-dimensional irradiation dose distribution obtained in this way and the three-dimensional irradiation dose distribution set in the treatment plan (ST8).
- the dose distribution set in the treatment plan is stored in advance in the irradiation area dose distribution data storage unit 15 of the dose distribution calculation / evaluation apparatus 10 from the treatment plan apparatus.
- the degree to which the irradiation dose distribution as the measurement value matches the irradiation dose distribution set by the treatment plan can be evaluated using an index such as a known gamma index.
- the two cameras 7 and 8 arranged on the circle C centering on the irradiation central axis CA are used for each spot position.
- the dose distribution by spot scanning irradiation can be easily measured by calculating the spot position from the image obtained by imaging the light emission of the water phantom 3 by irradiation and using the PDD and OCR data of the pencil beam measured in advance. Can do. It is desirable to arrange the two cameras at positions where the imaging directions are orthogonal to each other. However, if the camera calibration parameters corresponding to the arrangement of the cameras are obtained, the spot position can be calculated from the camera image. Therefore, the two cameras do not necessarily have to be arranged at orthogonal positions. Further, at least two cameras may be arranged, and three or more cameras may be arranged. If the number of cameras is large, the spot position can be calculated with higher accuracy.
- FIG. FIG. 6 is a block diagram showing a schematic configuration of a particle beam irradiation apparatus including a dose distribution measuring apparatus 100 according to Embodiment 2 of the present invention. 6, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.
- an OCR measurement camera 9 is added to the configuration of the dose distribution measurement apparatus 1 according to the first embodiment.
- the OCR measurement camera 9 is installed outside the water phantom 3 on the side opposite to the side where the entrance window 6 of the water phantom 3 is located.
- the OCR measurement camera 9 acquires an image in the direction of the water phantom 3. An image is acquired every time each spot position is irradiated.
- the OCR distribution calculation unit 18 in the dose distribution calculation / evaluation apparatus 110 calculates OCR data for each irradiation at each spot position.
- the OCR data can be calculated by calculating the beam diameter from the camera image and assuming the distribution as, for example, a Gaussian distribution and using the OCR data.
- the dose addition unit 13 calculates and adds a dose distribution having the i-th spot position calculated by the spot position calculation unit 12 as a peak.
- the second embodiment it is not necessary to measure and store the OCR of the pencil beam in advance, and the OCR when actually irradiated is measured and used for dose distribution calculation. High dose distribution can be measured.
- FIG. 7 is a block diagram showing a schematic configuration of a particle beam irradiation apparatus including a dose distribution measuring apparatus 200 according to Embodiment 3 of the present invention.
- the same reference numerals as those in FIG. 1 denote the same or corresponding parts.
- one camera 70 is disposed outside the water phantom 3.
- the camera 70 is arranged on a circle C centered on the irradiation center axis CA in a plane perpendicular to the irradiation center axis CA of the particle beam 4 and captures an image centered on the irradiation stop axis CA. .
- FIG. 8 shows an operation flow of the dose distribution measuring apparatus 200 according to the third embodiment.
- the entire surface is exposed during the irradiation with the camera 70 (ST12).
- the light emitted to the camera image processing unit 211 in the dose distribution calculation evaluation apparatus 210 is recorded as an integrated value.
- the image to be recorded may be an image in which the light intensity is represented by color shading, or may be an image represented by an equal light intensity curve connecting the same points of light intensity.
- the recorded image is an integrated value of the space and time in the optical axis direction of the camera, not the dose distribution itself.
- the image prediction unit 30 uses the irradiation region dose distribution data set in the treatment planning device 20 stored in the irradiation region dose distribution data storage unit 15 to calculate the light emission amount of the water phantom 3 based on this dose distribution. Simulation is performed to predict an image as an integrated value of space and time that will be captured at the position of the camera 70 based on the simulated light emission amount, and the predicted image is stored. Since the light emission of the liquid 5 containing a fluorescent substance is often non-linear with respect to the irradiation dose, it is preferable to perform simulation in consideration of this non-linearity.
- the dose distribution evaluation unit 214 compares and evaluates the predicted image stored in the image prediction unit 30 and the captured image recorded in the camera image processing unit 211, so that the dose distribution set in the treatment planning device 20 is actually Can be compared and evaluated (ST13).
- the dose distribution itself cannot be directly measured, but with a simple configuration of one camera, the dose distribution set in the treatment planning apparatus, Indirect comparison and evaluation of dose distribution when actually irradiated.
- FIG. 9 is a block diagram showing a schematic configuration of a particle beam irradiation apparatus including a dose distribution measuring apparatus 300 according to Embodiment 4 of the present invention.
- FIG. 10 is a flowchart showing the operation of the dose distribution measuring apparatus according to the fourth embodiment. 9, the same reference numerals as those in FIG. 7 denote the same or corresponding parts.
- one camera 70 is arranged outside the water phantom 3.
- the camera 70 is arranged on a circle C centered on the irradiation center axis CA in a plane perpendicular to the irradiation center axis CA of the particle beam 4 and captures an image centered on the irradiation stop axis CA. .
- the light emission of the liquid 5 containing the fluorescent material when the particle beam 4 is irradiated to the water phantom 3 by the spot scanning irradiation method (ST11) is being irradiated by the camera 70.
- the light emitted to the camera image processing unit 311 of the dose distribution calculation evaluation apparatus 310 is recorded as an integrated value.
- the recorded image is an integrated value of the space and time in the optical axis direction of the camera, not the dose distribution itself.
- the image is recorded as data as shown in FIG. 11, for example, represented by an isolight intensity curve.
- a one-dimensional section A in a direction parallel to the central axis CA of irradiation and a cross-section B in a direction perpendicular to the central axis CA of irradiation As a one-dimensional light intensity distribution (ST14). Examples of the extracted light intensity distribution are shown in FIGS.
- FIG. 12 is an example of a one-dimensional section A in a direction parallel to the central axis of irradiation, that is, an example of a light intensity distribution in the Z direction.
- FIG. 12 is an example of a one-dimensional section A in a direction parallel to the central axis of irradiation, that is, an example of a light intensity distribution in the Z direction.
- the image prediction unit 315 simulates the light emission amount of the water phantom by this dose distribution using the irradiation region dose distribution data set in the treatment planning device 20 stored in the irradiation region dose distribution data storage unit 15. Then, an image as an integrated value of space and time that will be imaged at the position of the camera 70 by the simulated light emission amount is predicted, and the cross section A in a direction parallel to the central axis CA of the irradiation is predicted from the predicted image.
- the dose distribution evaluation unit 314 compares the one-dimensional light intensity distribution extracted from the captured image by the one-dimensional light intensity distribution calculation unit 319 with the one-dimensional light intensity distribution extracted from the predicted image by the image prediction unit 315. Thus, the irradiation dose distribution can be evaluated (ST15).
- FIG. FIG. 14 is an operation flowchart of the dose distribution measuring apparatus according to the fifth embodiment of the present invention. Similar to the fourth embodiment, the dose distribution measuring apparatus according to the fifth embodiment has the configuration of the dose distribution measuring apparatus 300 shown in FIG. 9, and the water phantom 3 is moved to the water phantom 3 for a short time without moving the particle beam 4 which is a pencil beam. Irradiation (ST21), and light emission by the pencil beam is imaged by the camera 70 (ST22), whereby the source data of the particle beam 4 which is a pencil beam is obtained. For example, if the camera 70 is arranged as shown in FIG.
- the one-dimensional light intensity distribution calculated in the one-dimensional light intensity distribution calculation unit 319 (ST23) is a distribution corresponding to the PDD of the radiation source.
- the one-dimensional light intensity distribution in the X direction is a distribution corresponding to the OCR in the X direction of the radiation source. Therefore, the dose distribution evaluation unit 314 can extract the PDD and OCR data of the radiation source from the one-dimensional intensity distribution calculated by the one-dimensional light intensity distribution calculation unit 319 (ST24). If another camera is installed in the direction orthogonal to the camera 70, that is, the position of the camera 8 in FIG. 1, a distribution corresponding to the OCR in the Y direction of the radiation source is obtained.
- the light intensity distribution can be easily converted to the absorbed dose distribution.
- the source data corresponding to the PDD or OCR of the pencil beam can be easily obtained.
- the first scene is a measurement for registering source data in a treatment plan.
- a finger-type dosimeter or the like is used as the OCR measurement.
- a Bragg Peak chamber or the like is used as the PDD measurement.
- Another application (scene) is the distribution measurement for verifying in advance whether the dose administration to the patient is as simulated in the treatment plan.
- OCR is often measured with a finger-type dosimeter or the like
- PDD is often measured with Advanced Markus or the like.
- Dose distribution measuring device 1, 100, 200, 300: Dose distribution measuring device, 2: Irradiation system, 3: Water phantom, 4: Particle beam, 5: Liquid containing fluorescent substance, 6: Entrance window, 7, 8, 70: Camera, 9 : OCR measurement camera 10, 110, 210, 310: Dose distribution calculation evaluation device, 11, 211, 311: Camera image processing unit, 12: Spot position calculation unit, 13: Dose addition unit, 14, 214, 314: Dose distribution evaluation unit, 15: Irradiation area dose distribution data storage unit, 16: Pencil beam dose distribution data storage unit, 17: Camera calibration parameter storage unit, 18: OCR distribution calculation unit, 20: Treatment planning device, 21: Irradiation System controller, 22: accelerator system controller, 30, 315: image prediction unit, 319: one-dimensional light intensity distribution calculation unit,
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Abstract
Description
図1は、本発明の実施の形態1による線量分布測定装置1を含む粒子線照射装置の概略構成を示すブロック図である。照射系2から水槽で構成される水ファントム3に向けて粒子線4が照射される。水ファントム3中には、粒子線を吸収して発光する蛍光物質を含む液体5(一般に液体シンチレータと呼ばれている)が入れられている。水ファントム3の壁は、アクリルなど光を透過する透明な材料で構成されている。また、粒子線4が入射する部分には、同じくアクリルなど粒子線の吸収が少ない材料の入射窓6が設けられている。粒子線の吸収が少ないようにするため、入射窓6は他の部分よりも薄くすることがある。水ファントム3の周囲には、カメラ7およびカメラ8の2台のカメラが配置されている。2台のカメラは、例えば粒子線4の照射の中心軸CAに対して垂直な面における、照射の中心軸CAを中心とする円C上に配置され、照射の中心軸CAを中心とする画像を撮像する。
図6は、本発明の実施の形態2による線量分布測定装置100を含む粒子線照射装置の概略構成を示すブロック図である。図6において、図1と同一符号は同一または相当する部分を示す。本実施の形態2による線量分布測定装置100では、実施の形態1による線量分布測定装置1の構成に、OCR測定用カメラ9を追加したものである。OCR測定用カメラ9は、水ファントム3の入射窓6のある側と反対側の、水ファントム3の外部に設置されている。OCR測定用カメラ9は、水ファントム3の方向に向けて画像を取得する。画像は、各スポット位置を照射する毎に取得する。このように取得することで、各スポット位置での照射毎のOCRに相当する画像が得られる。これらの画像から、線量分布算出評価装置110におけるOCR分布算定部18において、各スポット位置の照射毎にOCRデータを算定する。OCRデータの算定は、カメラ画像からビーム径を算出し、分布として例えばガウス分布を仮定してOCRデータとすれば良い。
図7は、本発明の実施の形態3による線量分布測定装置200を含む粒子線照射装置の概略構成を示すブロック図である。図7において、図1と同一符号は同一または相当する部分を示す。本実施の形態3では、1台のカメラ70が水ファントム3の外部に配置されている。カメラ70は、例えば粒子線4の照射の中心軸CAに対して垂直な面における照射の中心軸CAを中心とする円C上に配置され、照射の中止軸CAを中心とする画像を撮像する。
図9は、本発明の実施の形態4による線量分布測定装置300を含む粒子線照射装置の概略構成を示すブロック図である。また図10は、本実施の形態4による線量分布測定装置の動作を示すフロー図である。図9において、図7と同一符号は同一または相当する部分を示す。本実施の形態4では、実施の形態3と同様、1台のカメラ70が水ファントム3の外部に配置されている。カメラ70は、例えば粒子線4の照射の中心軸CAに対して垂直な面における照射の中心軸CAを中心とする円C上に配置され、照射の中止軸CAを中心とする画像を撮像する。
図14は、本発明の実施の形態5による線量分布測定装置の動作フロー図である。本実施の形態5による線量分布測定装置は、実施の形態4と同様、図9に示す線量分布測定装置300の構成で、ペンシルビームである粒子線4を移動させずに水ファントム3に短時間照射して(ST21)、ペンシルビームによる発光を、カメラ70により撮像する(ST22)ことで、ペンシルビームである粒子線4の線源データが得られる。例えば、カメラ70の配置が図9に示すような配置であると、一次元光強度分布算出部319において算出(ST23)するZ方向の一次元光強度分布は、線源のPDDに相当する分布となり、X方向の一次元光強度分布は、線源のX方向のOCRに相当する分布となる。よって、線量分布評価部314において、一次元光強度分布算出部319において算出した一次元強度分布から、線源のPDDおよびOCRのデータを抽出する(ST24)ことができる。さらにもう一台のカメラをカメラ70と直交する方向、すなわち図1のカメラ8の位置に設置すると、線源のY方向のOCRに相当する分布が得られる。このとき、輝度と吸収線量が非線形な関係になっている場合、輝度と吸収線量の非線形な関係を対応テーブルとしてテーブル化しておけば、光強度分布から吸収線量分布に簡単に変換できる。
Claims (6)
- 粒子線をペンシルビームとして照射対象に照射するための照射系が、前記粒子線のエネルギーを変更する毎に、当該エネルギーに対応した前記照射対象の深さ位置の2次元照射領域に前記粒子線を進行方向に垂直な2次元方向に移動と停留を繰り返して走査することにより3次元の照射領域に前記粒子線を照射するときの照射線量分布を測定するための照射線量分布測定装置において、
前記粒子線を照射することにより発光する蛍光物質を含む液体を有し、前記粒子線を入射させるための入射窓を備えた水ファントム、
この水ファントムの外部であって、前記水ファントムの前記粒子線の照射の中心軸に垂直な面上に、前記蛍光物質を含む液体の発光を撮像するように配置された少なくとも2台のカメラ、
この少なくとも2台のカメラの画像を処理するカメラ画像処理部と、前記少なくとも2台のカメラのそれぞれのカメラのカメラ校正用パラメータを保存するカメラ校正用パラメータ記憶部と、前記カメラ校正用パラメータ記憶部に保存されている前記それぞれのカメラのカメラ校正用パラメータを用いて前記カメラ画像処理部で処理されたカメラ画像データから前記粒子線の停留時の照射位置であるスポット位置を算定するスポット位置算定部と、前記ペンシルビームのPDDおよびOCRのデータを保存するペンシルビーム線量分布データ記憶部と、前記ペンシルビーム線量分布データ記憶部に保存されているPDDおよびOCRのデータを用いて前記スポット位置算定部で算定されたスポット位置における照射線量分布を算定して、スポット位置毎の照射線量分布を加算する線量加算部と、を備えた線量分布算出評価装置、
を備えたことを特徴とする線量分布測定装置。 - 前記水ファントムの粒子線の入射側とは反対側であって、前記水ファントムの外部に配置されたOCR測定用カメラを備え、前記線量分布算出評価装置が、前記OCR測定用カメラの撮像画像から前記スポット位置毎のOCRを算定するOCR分布算定部を備え、前記線量加算部は、前記ペンシルビーム線量分布データ記憶部に保存されているOCRのデータに替えて前記OCR分布算定部において算定されたOCRを用いて前記スポット位置算定部で算定されたスポット位置における照射線量分布を算定することを特徴とする請求項1に記載の線量分布測定装置。
- 前記線量分布算出評価装置は、治療計画装置において設定された照射領域の線量分布データを記憶する照射領域線量分布データ記憶部を備え、前記線量加算部によって算定されたスポット位置毎の照射線量分布を全て加算して得られた測定照射線量分布と、前記照射領域線量分布データ記憶部に保存されている線量分布データとを比較して、前記測定照射線量分布を評価することを特徴とする請求項1または請求項2に記載の線量分布測定装置。
- 粒子線をペンシルビームとして照射対象に照射するための照射系が、前記粒子線のエネルギーを変更する毎に、当該エネルギーに対応した前記照射対象の深さ位置の2次元照射領域に前記粒子線を進行方向に垂直な2次元方向に移動と停留を繰り返して走査することにより3次元の照射領域に前記粒子線を照射するときの照射線量分布を測定するための照射線量分布測定装置において、
前記粒子線を照射することにより発光する蛍光物質を含む液体を有し、前記粒子線を入射させるための入射窓を備えた水ファントムと、
この水ファントムの外部であって、前記水ファントムの前記粒子線の照射の中心軸に垂直な面上に、前記蛍光物質を含む液体の発光を撮像するように配置された1台のカメラと、
この1台のカメラの画像を処理するカメラ画像処理部と、治療計画装置において設定された照射領域の線量分布データを保存する照射領域線量分布データ記憶部と、この照射領域線量分布データ記憶部に保存された照射領域の線量分布データから、前記1台のカメラの位置におけるカメラ撮像画像を予測して予測画像を保存する画像予測部と、前記カメラ画像処理部で処理した前記1台のカメラ画像と、前記画像予測部に保存された予測画像とを比較して評価する線量分布評価部とを備えた線量分布算出評価装置と、
を備えたことを特徴とする線量分布測定装置。 - 前記カメラ画像処理部で処理されたカメラ画像から一次元の光強度分布を抽出する一次元光強度分布算出部を備え、前記線量分布評価部は、前記画像予測部に保存されている予測画像から一次元光強度分布を抽出して、前記一次元光強度分布算出部で算出した一次元光強度分布と前記予測画像から抽出した一次元強度分布とを比較して評価することを特徴とする請求項4に記載の線量分布測定装置。
- ペンシルビームである粒子線の線源データを測定する線量分布測定装置において、
前記粒子線を照射することにより発光する蛍光物質を含む液体を有し、前記粒子線を入射させるための入射窓を備えた水ファントムと、
この水ファントムの周囲であって、前記水ファントムの前記粒子線の照射の中心軸に垂直な面上に、前記蛍光物質を含む液体の発光を撮像するように配置された1台のカメラと、
この1台のカメラの画像を処理するカメラ画像処理部と、静止した前記ペンシルビームである粒子線による照射での前記蛍光物質を含む液体の発光を前記1台のカメラにより撮像したカメラ画像を前記カメラ画像処理部で処理した画像から一次元の光強度分布を抽出する一次元光強度分布算出部と、この一次元光強度分布算出部で抽出した一次元光強度分布から前記ペンシルビームである粒子線のPDDおよびOCRのデータを得る線量分布評価部とを備えた線量分布算出評価装置と、
を備えたことを特徴とする線量分布測定装置。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016051153A3 (en) * | 2014-10-02 | 2016-05-26 | Vision Rt Limited | Method of calibrating a patient monitoring system for use with a radiotherapy treatment apparatus |
WO2016099264A1 (en) | 2014-12-18 | 2016-06-23 | Rijksuniversiteit Groningen | Imaging method and system for verification of a treatment plan in hadron therapy |
JP2016198236A (ja) * | 2015-04-09 | 2016-12-01 | 公益財団法人若狭湾エネルギー研究センター | 放射線モニタリングシステム |
JP2020044286A (ja) * | 2018-09-21 | 2020-03-26 | 国立研究開発法人量子科学技術研究開発機構 | データ分析装置、比較表示装置、治療計画データ編集装置、線量分布測定方法、プログラムおよび線量分布測定装置 |
CN112083467A (zh) * | 2020-09-28 | 2020-12-15 | 中国科学院近代物理研究所 | 一种粒子治疗装置的三维剂量测量探测系统 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9937361B2 (en) * | 2014-01-10 | 2018-04-10 | Mitsubishi Electric Corporation | Particle beam irradiation apparatus |
WO2017002231A1 (ja) * | 2015-07-01 | 2017-01-05 | 三菱電機株式会社 | 線量分布演算装置、粒子線治療装置、及び線量分布演算方法 |
EP3394639B1 (en) * | 2015-12-23 | 2022-10-19 | Agfa Nv | Radiation dosimeter |
EP3576627B1 (en) * | 2017-02-03 | 2021-08-11 | The University Of Liverpool | Phantom |
US10569105B2 (en) | 2017-05-26 | 2020-02-25 | Accuray Incorporated | Radiation based treatment beam position calibration and verification |
GB2565119A (en) | 2017-08-02 | 2019-02-06 | Vision Rt Ltd | Method of calibrating a patient monitoring system for use with a radiotherapy treatment apparatus |
CN107875524B (zh) * | 2017-11-10 | 2020-06-12 | 上海联影医疗科技有限公司 | 放射治疗系统、模体以及等中心校准方法 |
GB2571122B (en) * | 2018-02-19 | 2020-04-22 | Elekta ltd | Water tank apparatus |
CN110354402B (zh) * | 2018-04-28 | 2021-05-11 | 北京铭杰医疗科技有限公司 | 电子束剂量测量系统及检测方法 |
EP3827287B1 (en) | 2018-07-23 | 2023-03-22 | Ion Beam Applications S.A. | Scintillating detectors for quality assurance of a therapy photon beam |
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DE102020200400B4 (de) | 2019-02-14 | 2021-10-28 | Siemens Healthcare Gmbh | Kontrolliertes Bestrahlen eines Objekts |
KR102232327B1 (ko) * | 2019-03-14 | 2021-03-29 | 충남대학교산학협력단 | 근접방사선원의 방사선량분포 측정장치 및 그 측정 방법 |
CN111973892B (zh) * | 2019-05-23 | 2022-07-08 | 千才生医股份有限公司 | 用于放射治疗的笔尖式质子束扫描系统剂量分布重建方法 |
CN110652661B (zh) * | 2019-09-30 | 2021-03-26 | 中北大学 | 一种卷积叠加剂量计算系统 |
IT202000007780A1 (it) * | 2020-04-14 | 2021-10-14 | Istituto Naz Di Fisica Nucleare I N F N | Rivelatore per dosimetria in carburo di silicio |
CN113406686A (zh) * | 2021-06-16 | 2021-09-17 | 中国科学院近代物理研究所 | 一种离子束三维剂量分布探测装置及方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001346894A (ja) * | 2000-06-08 | 2001-12-18 | Mitsubishi Electric Corp | 線量分布測定装置 |
JP2002360715A (ja) * | 2001-06-08 | 2002-12-17 | Mitsubishi Electric Corp | 線量分布測定装置および線量分布測定システム |
JP2003047666A (ja) | 2001-08-07 | 2003-02-18 | Mitsubishi Electric Corp | 水ファントム型線量分布測定装置 |
JP2003079755A (ja) | 2001-09-12 | 2003-03-18 | Wakasawan Energ Kenkyu Center | 光ctによる粒子線線量分布測定装置および方法 |
JP2010032419A (ja) * | 2008-07-30 | 2010-02-12 | Natl Inst Of Radiological Sciences | 照射線量確認システム及び照射線量確認方法 |
JP2011050585A (ja) * | 2009-09-02 | 2011-03-17 | Toshiba Corp | 粒子線ビーム照射装置および粒子線ビーム照射方法 |
JP2011133598A (ja) | 2009-12-24 | 2011-07-07 | Iej:Kk | 固体ファントム |
Family Cites Families (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5596653A (en) * | 1991-04-09 | 1997-01-21 | Mitsubishi Denki Kabushiki Kaisha | Radiation therapy treatment planning system |
JP3841898B2 (ja) * | 1996-11-21 | 2006-11-08 | 三菱電機株式会社 | 深部線量測定装置 |
JP3784419B2 (ja) * | 1996-11-26 | 2006-06-14 | 三菱電機株式会社 | エネルギー分布を形成する方法 |
US6025717A (en) * | 1997-06-23 | 2000-02-15 | Fonar Corporation | Diagnostic simulator for MRI |
DE19907774A1 (de) * | 1999-02-19 | 2000-08-31 | Schwerionenforsch Gmbh | Verfahren zum Verifizieren der berechneten Bestrahlungsdosis eines Ionenstrahl-Therapiesystems |
AU2001294604A1 (en) * | 2000-09-22 | 2002-04-02 | Numerix Llc | Improved radiation therapy treatment method |
US20020122117A1 (en) * | 2000-12-26 | 2002-09-05 | Masamichi Nakagawa | Camera device, camera system and image processing method |
US20020190991A1 (en) * | 2001-05-16 | 2002-12-19 | Daniel Efran | 3-D instant replay system and method |
JP4146648B2 (ja) * | 2002-02-14 | 2008-09-10 | 三菱電機株式会社 | 吸収線量分布測定装置 |
JP4147059B2 (ja) * | 2002-07-03 | 2008-09-10 | 株式会社トプコン | キャリブレーション用データ測定装置、測定方法及び測定プログラム、並びにコンピュータ読取可能な記録媒体、画像データ処理装置 |
US7307654B2 (en) * | 2002-10-31 | 2007-12-11 | Hewlett-Packard Development Company, L.P. | Image capture and viewing system and method for generating a synthesized image |
JP2004321408A (ja) * | 2003-04-23 | 2004-11-18 | Mitsubishi Electric Corp | 放射線照射装置および放射線照射方法 |
WO2006007716A2 (en) * | 2004-07-20 | 2006-01-26 | Resonant Medical Inc. | Calibrating imaging devices |
US7208748B2 (en) * | 2004-07-21 | 2007-04-24 | Still River Systems, Inc. | Programmable particle scatterer for radiation therapy beam formation |
JP4585815B2 (ja) * | 2004-09-03 | 2010-11-24 | キヤノン株式会社 | 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム |
JP4679567B2 (ja) * | 2005-02-04 | 2011-04-27 | 三菱電機株式会社 | 粒子線照射装置 |
JP4435829B2 (ja) * | 2005-02-04 | 2010-03-24 | 三菱電機株式会社 | 粒子線照射装置 |
US20070249925A1 (en) * | 2005-08-29 | 2007-10-25 | Martin Hoheisel | X-Ray Diagnostic Device for Mammography |
US7450687B2 (en) * | 2005-09-29 | 2008-11-11 | University Of Medicine And Dentistry Of New Jersey | Method for verification of intensity modulated radiation therapy |
US7852217B2 (en) * | 2005-12-28 | 2010-12-14 | Panasonic Corporation | Object detecting device, object detecting method and object detecting computer program |
CN2932411Y (zh) * | 2006-01-25 | 2007-08-08 | 南方医科大学 | 一种立体定向放射治疗系统剂量测量水箱 |
US8406562B2 (en) * | 2006-08-11 | 2013-03-26 | Geo Semiconductor Inc. | System and method for automated calibration and correction of display geometry and color |
CA2662893A1 (en) * | 2006-09-06 | 2008-03-13 | University Health Network | Fluorescence quantification and image acquisition in highly turbid media |
CN100432699C (zh) * | 2006-12-29 | 2008-11-12 | 成都川大奇林科技有限责任公司 | 一种测量医用加速器光子束能谱的方法 |
EP2116277A1 (en) * | 2008-05-06 | 2009-11-11 | Ion Beam Applications S.A. | Device and method for particle therapy monitoring and verification |
DK2291640T3 (en) * | 2008-05-20 | 2019-03-11 | Univ Health Network | Device and method for fluorescence-based imaging and monitoring |
CN101290354A (zh) * | 2008-06-12 | 2008-10-22 | 中国测试技术研究院电离辐射研究所 | 用于放射治疗设备临床剂量分布的交换探测器测量方法 |
EP2140913A1 (en) * | 2008-07-03 | 2010-01-06 | Ion Beam Applications S.A. | Device and method for particle therapy verification |
US8294762B2 (en) * | 2008-10-10 | 2012-10-23 | Fujifilm Corporation | Three-dimensional shape measurement photographing apparatus, method, and program |
WO2010141101A1 (en) * | 2009-06-05 | 2010-12-09 | Sentinel Scanning Corporation | Transportation container inspection system and method |
WO2010143266A1 (ja) * | 2009-06-09 | 2010-12-16 | 三菱電機株式会社 | 粒子線照射装置 |
WO2011005862A2 (en) * | 2009-07-07 | 2011-01-13 | The Board Of Regents Of The University Of Texas System | Liquid scintillator for 3d dosimetry for radiotherapy modalities |
US8835877B2 (en) * | 2009-09-30 | 2014-09-16 | Stc.Unm | System and methods of photon-based radiotherapy and radiosurgery delivery |
US8466428B2 (en) * | 2009-11-03 | 2013-06-18 | Mitsubishi Electric Corporation | Particle beam irradiation apparatus and particle beam therapy system |
WO2011148486A1 (ja) * | 2010-05-27 | 2011-12-01 | 三菱電機株式会社 | 粒子線照射システムおよび粒子線照射システムの制御方法 |
EP3031495A3 (en) * | 2010-08-17 | 2016-08-24 | Mitsubishi Electric Corporation | Multi-leaf collimator, particle beam therapy system, and treatment planning apparatus |
US8263954B2 (en) * | 2010-11-16 | 2012-09-11 | Mitsubishi Electric Corporation | Bolus, bolus manufacturing method, particle beam therapy system, and treatment planning apparatus |
CN103402581B (zh) * | 2011-03-02 | 2016-02-24 | 三菱电机株式会社 | 粒子射线照射系统 |
CN103338819B (zh) * | 2011-03-08 | 2015-12-02 | 三菱电机株式会社 | 粒子射线治疗装置及粒子射线治疗装置的照射剂量设定方法 |
WO2012120678A1 (ja) * | 2011-03-10 | 2012-09-13 | 三菱電機株式会社 | 粒子線治療装置 |
WO2012159043A2 (en) * | 2011-05-19 | 2012-11-22 | The Trustees Of Dartmouth College | Method and system for using cherenkov radiation to monitor beam profiles and radiation therapy |
CN104010694B (zh) * | 2012-03-27 | 2016-07-06 | 三菱电机株式会社 | 粒子射线治疗装置及粒子射线治疗装置的运转方法 |
US9694207B2 (en) * | 2012-08-21 | 2017-07-04 | Mitsubishi Electric Corporation | Control device for scanning electromagnet and particle beam therapy apapratus |
US10674135B2 (en) * | 2012-10-17 | 2020-06-02 | DotProduct LLC | Handheld portable optical scanner and method of using |
-
2012
- 2012-12-26 WO PCT/JP2012/083641 patent/WO2014102929A1/ja active Application Filing
- 2012-12-26 CN CN201280078002.1A patent/CN104870054B/zh not_active Expired - Fee Related
- 2012-12-26 EP EP12891049.4A patent/EP2939708A4/en not_active Withdrawn
- 2012-12-26 JP JP2014553936A patent/JP5918865B2/ja not_active Expired - Fee Related
- 2012-12-26 US US14/439,326 patent/US20150306427A1/en not_active Abandoned
-
2013
- 2013-06-28 TW TW102123140A patent/TWI463163B/zh not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001346894A (ja) * | 2000-06-08 | 2001-12-18 | Mitsubishi Electric Corp | 線量分布測定装置 |
JP2002360715A (ja) * | 2001-06-08 | 2002-12-17 | Mitsubishi Electric Corp | 線量分布測定装置および線量分布測定システム |
JP2003047666A (ja) | 2001-08-07 | 2003-02-18 | Mitsubishi Electric Corp | 水ファントム型線量分布測定装置 |
JP2003079755A (ja) | 2001-09-12 | 2003-03-18 | Wakasawan Energ Kenkyu Center | 光ctによる粒子線線量分布測定装置および方法 |
JP2010032419A (ja) * | 2008-07-30 | 2010-02-12 | Natl Inst Of Radiological Sciences | 照射線量確認システム及び照射線量確認方法 |
JP2011050585A (ja) * | 2009-09-02 | 2011-03-17 | Toshiba Corp | 粒子線ビーム照射装置および粒子線ビーム照射方法 |
JP2011133598A (ja) | 2009-12-24 | 2011-07-07 | Iej:Kk | 固体ファントム |
Non-Patent Citations (1)
Title |
---|
See also references of EP2939708A4 |
Cited By (11)
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WO2016051153A3 (en) * | 2014-10-02 | 2016-05-26 | Vision Rt Limited | Method of calibrating a patient monitoring system for use with a radiotherapy treatment apparatus |
JP2017529959A (ja) * | 2014-10-02 | 2017-10-12 | ビジョン アールティ リミテッド | 放射線治療装置と共に使用するための患者モニタリングシステムの較正方法 |
US10861193B2 (en) | 2014-10-02 | 2020-12-08 | Vision Rt Ltd. | Method of calibrating a patient monitoring system for use with a radiotherapy treatment apparatus |
WO2016099264A1 (en) | 2014-12-18 | 2016-06-23 | Rijksuniversiteit Groningen | Imaging method and system for verification of a treatment plan in hadron therapy |
NL2014012B1 (en) * | 2014-12-18 | 2016-10-12 | Univ Groningen | Imaging method and system for verification of a treatment plan in hadron therapy. |
JP2016198236A (ja) * | 2015-04-09 | 2016-12-01 | 公益財団法人若狭湾エネルギー研究センター | 放射線モニタリングシステム |
JP2020044286A (ja) * | 2018-09-21 | 2020-03-26 | 国立研究開発法人量子科学技術研究開発機構 | データ分析装置、比較表示装置、治療計画データ編集装置、線量分布測定方法、プログラムおよび線量分布測定装置 |
WO2020059364A1 (ja) * | 2018-09-21 | 2020-03-26 | 国立研究開発法人量子科学技術研究開発機構 | データ分析装置、比較表示装置、治療計画データ編集装置、線量分布測定方法、プログラムおよび線量分布測定装置 |
JP7125109B2 (ja) | 2018-09-21 | 2022-08-24 | 国立研究開発法人量子科学技術研究開発機構 | データ分析装置、比較表示装置、治療計画データ編集装置、線量分布測定方法、プログラムおよび線量分布測定装置 |
CN112083467A (zh) * | 2020-09-28 | 2020-12-15 | 中国科学院近代物理研究所 | 一种粒子治疗装置的三维剂量测量探测系统 |
CN112083467B (zh) * | 2020-09-28 | 2022-05-31 | 中国科学院近代物理研究所 | 一种粒子治疗装置的三维剂量测量探测系统 |
Also Published As
Publication number | Publication date |
---|---|
TWI463163B (zh) | 2014-12-01 |
TW201425979A (zh) | 2014-07-01 |
CN104870054A (zh) | 2015-08-26 |
EP2939708A4 (en) | 2016-08-10 |
EP2939708A1 (en) | 2015-11-04 |
CN104870054B (zh) | 2017-06-23 |
JPWO2014102929A1 (ja) | 2017-01-12 |
JP5918865B2 (ja) | 2016-05-18 |
US20150306427A1 (en) | 2015-10-29 |
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