公开(公告)号：WO2016194286A1

公开(公告)日：2016-12-08

申请号：PCT/JP2016/002091

申请日：2016-04-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： IWASHITA, Atsushi ,  TAKENAKA, Katsuro ,  TAKEDA, Shinichi ,  TERUI, Kosuke

IPC: G01T1/17 ,  A61B6/00 ,  G01T1/20 ,  H01L27/144 ,  H04N5/32

CPC classification number: H04N5/32 ,  A61B6/4241

Abstract: A radiation imaging apparatus that comprises a plurality of sensor units each including a detection element which detects radiation, a quantization unit configured to quantize a signal value from the detection element of each sensor unit, a count unit configured to count, for each sensor unit, the number of matches between a second pattern as a reference pattern set in advance, and a first pattern which includes a quantization result by the quantization unit of the signal value from the detection element of the sensor unit and a quantization result by the quantization unit of the signal value from the detection element of another sensor unit on the periphery of the sensor unit, and a readout unit configured to read out a count value of the count unit.

Abstract translation: 一种辐射成像装置，包括：多个传感器单元，每个传感器单元包括检测辐射的检测元件;量化单元，被配置为从每个传感器单元的检测元件量化信号值;计数单元，被配置为对于每个传感器单元， 作为预先设定的基准图案的第二图案之间的匹配次数和包括来自传感器单元的检测元件的信号值的量化单元的量化结果的量化结果的量化结果和量化单元的量化结果 来自传感器单元周围的另一个传感器单元的检测元件的信号值以及被配置为读出计数单元的计数值的读出单元。

公开(公告)号：WO2017010045A1

公开(公告)日：2017-01-19

申请号：PCT/JP2016/002934

申请日：2016-06-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： TERUI, Kosuke ,  TAKEDA, Shinichi ,  TAKENAKA, Katsuro ,  SATO, Sho ,  IWASHITA, Atsushi ,  ISHII, Yoshiaki

IPC: G01T1/20 ,  A61B6/00 ,  G01T1/17

CPC classification number: G01T1/2018 ,  A61B6/4225 ,  A61B6/4233 ,  A61B6/4241 ,  H04N5/32 ,  H04N5/363 ,  H04N5/374 ,  H04N5/378

Abstract: A radiation imaging apparatus is provided. The apparatus comprises a scintillator configured to convert radiation into light, a sensor panel in which a plurality of pixels each comprising a light detector configured to detect the light is arranged in a two-dimensional array, and a processing unit. The processing unit comprises a signal generating unit configured to output signals indicating intensities of the light detected by the light detector of each of the plurality of pixels, and a detection unit configured to identify a group of pixels each of which outputs a signal of a level exceeding a reference value out of the signals and detect, based on a pattern of the group, pileup in which a plurality of radiation photons is detected as a single radiation photon.

Abstract translation: 提供了一种放射线成像装置。 该装置包括被配置为将辐射转换为光的闪烁体，其中每个包括被配置为检测光的光检测器的多个像素被布置在二维阵列中的传感器面板和处理单元。 所述处理单元包括：信号生成单元，被配置为输出指示由所述多个像素中的每一个的所述光检测器检测到的光的强度的信号;以及检测单元，被配置为识别每个所述像素的一组像素， 超过信号的参考值，并且基于组的图案检测其中多个辐射光子被检测为单个辐射光子的堆积。

公开(公告)号：WO2016194315A1

公开(公告)日：2016-12-08

申请号：PCT/JP2016/002377

申请日：2016-05-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKEDA, Shinichi ,  TAKENAKA, Katsuro ,  IWASHITA, Atsushi ,  TERUI, Kosuke

IPC: G01T1/20 ,  A61B6/00

CPC classification number: H04N5/32 ,  A61B6/4241

Abstract: The present invention provides a radiation imaging apparatus comprising a scintillator configured to convert radiation into light, a detector including a plurality of pixels each configured to detect an intensity of light converted by the scintillator and configured to count, for each pixel, the number of times of detection of light at each of a plurality of levels concerning the intensity of light, and a processor configured to perform processing of generating an image based on the number of times of detection at each level obtained for each pixel, wherein the processor corrects the number of times of detection, for each pixel, at each level obtained by using information indicating a relationship between energy of radiation and a probability that the detector will count light at each level, and generates an image based on the corrected numbers of times of detection.

Abstract translation: 本发明提供了一种辐射成像装置，其包括被配置为将辐射转换为光的闪烁体，包括多个像素的检测器，每个像素被配置为检测由闪烁体转换的光的强度，并且被配置为对于每个像素对次数进行计数 检测在与光的强度相关的多个级别的每一个处的光的处理器;以及处理器，被配置为基于为每个像素获得的每个级别的检测次数来执行产生图像的处理，其中处理器校正数字 通过使用表示辐射能量的关系的信息和检测器对每个等级的光进行计数的概率而获得的每个等级的每个像素的检测次数，并且基于校正的检测次数生成图像。

公开(公告)号：WO2012160935A1

公开(公告)日：2012-11-29

申请号：PCT/JP2012/061159

申请日：2012-04-19

Applicant: CANON KABUSHIKI KAISHA ,  TAKENAKA, Katsuro ,  KAMESHIMA, Toshio ,  YAGI, Tomoyuki ,  SATO, Sho ,  IWASHITA, Atsushi ,  SUGAWARA, Eriko

Inventor： TAKENAKA, Katsuro ,  KAMESHIMA, Toshio ,  YAGI, Tomoyuki ,  SATO, Sho ,  IWASHITA, Atsushi ,  SUGAWARA, Eriko

IPC: H04N5/32 ,  A61B6/00 ,  H04N5/347 ,  H04N5/353

CPC classification number: H05G1/56 ,  A61B6/4283 ,  A61B6/4405 ,  H04N5/32 ,  H04N5/347 ,  H04N5/353 ,  H04N5/3742 ,  H04N5/378

Abstract: An imaging apparatus comprises: a detecting unit 101 having a plurality of pixels 201 arranged in a matrix, each including a conversion element and a switch element for outputting a photoelectric conversion signal; a drive circuit unit 102 controlling the switching element such that the switching elements at least in one row are in the conducting state, and the switching elements in non-continuous rows are simultaneously in the conducting state; a signal processing unit 106 generating a detection signal 115 by adding or averaging the electrical signals output by the switch elements in non-continuous rows; a comparing unit 501 comparing the detection signal 115 with a threshold to determine whether the irradiation of radiation or light is started or ended; and a control circuit unit 108 controlling the drive circuit unit 102 or the signal processing unit 106 based on the determination of the comparing unit 501.

Abstract translation: 一种成像装置包括：检测单元101，具有以矩阵形式布置的多个像素201，每个像素201包括转换元件和用于输出光电转换信号的开关元件; 控制开关元件的驱动电路单元102，使得至少一行的开关元件处于导通状态，并且非连续行中的开关元件同时处于导通状态; 信号处理单元106通过对由非连续行中的开关元件输出的电信号相加或平均来生成检测信号115; 比较单元501将检测信号115与阈值进行比较，以确定辐射或光的照射是否开始或结束; 以及控制电路单元108，其基于比较单元501的确定来控制驱动电路单元102或信号处理单元106。

公开(公告)号：WO2017085905A1

公开(公告)日：2017-05-26

申请号：PCT/JP2016/004707

申请日：2016-10-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： ISHII, Yoshiaki ,  IWASHITA, Atsushi ,  SATO, Sho ,  TERUI, Kosuke

IPC: G01T1/17 ,  A61B6/00 ,  G01N23/04 ,  G01N23/087 ,  G01T1/20 ,  G01T1/24 ,  G01T1/36

CPC classification number: G01N23/04 ,  A61B6/4241 ,  A61B6/5258 ,  G01N2223/423

Abstract: An energy resolution decrease in a radiation imaging apparatus is suppressed. The apparatus includes a detector including a conversion unit configured to convert incident radiation photons into optical photons or charges, a pixel array including pixels arranged in a two-dimensional matrix and configured to obtain a pixel value in accordance with the optical photons or charges, and an output circuit including a plurality of output channels configured to output the pixel value from the pixel array, and a signal processing unit configured to perform signal processing of correcting the pixel value by using a correction coefficient in accordance with a pixel value obtaining process model in which a process of obtaining the pixel value output from the pixel array via the plurality of output channels on the basis of the optical photons or charges is modeled and obtaining an energy-discriminated radiographic image based on the corrected pixel value.

Abstract translation: 放射线成像设备中的能量分辨率下降被抑制。 该装置包括：检测器，其包括被配置为将入射辐射光子转换为光学光子或电荷的转换单元;像素阵列，其包括以二维矩阵排列的像素并且被配置为根据光学光子或电荷获得像素值;以及 输出电路，包括被配置为从像素阵列输出像素值的多个输出通道;以及信号处理单元，被配置为根据像素值获得处理模型，通过使用校正系数来执行校正像素值的信号处理 其中基于光学光子或电荷经由多个输出通道获得从像素阵列输出的像素值的处理被建模，并且基于校正的像素值获得能量区分的放射线照相图像。

公开(公告)号：WO2017081837A1

公开(公告)日：2017-05-18

申请号：PCT/JP2016/004569

申请日：2016-10-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： ISHII, Yoshiaki ,  IWASHITA, Atsushi ,  SATO, Sho ,  TERUI, Kosuke

IPC: H04N5/32 ,  A61B6/00 ,  G01T1/17 ,  G01T1/20 ,  H04N5/225

CPC classification number: H04N5/32 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/542 ,  G01T1/17 ,  G01T1/20

Abstract: A radiation imaging apparatus comprising a pixel array in which a plurality of pixels are arrayed and a processor configured to generate a radiation image based on radio-photons which have entered the pixel array, wherein the processor performs a first process of obtaining a value of a signal from each of the plurality of pixels as a pixel value, a second process of selecting at least one of the plurality of pixels as a reference pixel, and a third process of specifying a detection area of a radio-photon in the pixel array by sequentially referring to pixel values of pixels around the reference pixel as a starting point.

Abstract translation: 放射线成像设备，包括其中排列有多个像素的像素阵列和被配置为基于已经进入所述像素阵列的无线电光子来生成放射线图像的处理器，其中，所述处理器执行 第一处理，从多个像素中的每一个获得信号的值作为像素值;第二处理，选择多个像素中的至少一个作为参考像素;以及第三处理， 通过顺序参考参考像素周围的像素的像素值作为起点，在像素阵列中的无线电 - 光子。

公开(公告)号：WO2017006513A1

公开(公告)日：2017-01-12

申请号：PCT/JP2016/002697

申请日：2016-06-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： TERUI, Kosuke ,  IWASHITA, Atsushi ,  TAKENAKA, Katsuro ,  TAKEDA, Shinichi

IPC: G01T1/20 ,  A61B6/00 ,  G01T1/17

CPC classification number: A61B6/54 ,  A61B6/482 ,  A61B6/5258 ,  G01T1/20 ,  G06T11/005 ,  H04N5/32

Abstract: A radiation imaging apparatus is provided. The apparatus comprises a scintillator configured to convert radiation into light, a sensor panel in which a plurality of pixels each comprising a light detector configured to detect the light is arranged, and a processing unit. The processing unit comprises a conversion unit configured to output a detection signal in accordance with a signal generated in the light detector by the incident light and radiation that has transmitted through the scintillator without being converted into light, and a reset control unit configured to determine that the light detector detects the transmitted radiation based on a magnitude of the detection signal and reset the conversion unit if the light detector is determined to detect the transmitted radiation.

Abstract translation: 提供了一种放射线成像装置。 该装置包括被配置为将辐射转换为光的闪烁体，其中布置有包括被配置为检测光的光检测器的多个像素的传感器面板和处理单元。 处理单元包括转换单元，其被配置为根据在光检测器中产生的信号，通过已经透射闪烁体的入射光和辐射而输出检测信号而不被转换为光;以及复位控制单元，被配置为确定 光检测器基于检测信号的大小检测发射的辐射，并且如果确定光检测器以检测发射的辐射，则重置转换单元。

公开(公告)号：WO2017073043A1

公开(公告)日：2017-05-04

申请号：PCT/JP2016/004671

申请日：2016-10-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： MACHIDA, Yoshihito ,  IWASHITA, Atsushi

IPC: A61B6/00 ,  G01T7/00

CPC classification number: A61B6/563 ,  A61B6/12 ,  A61B6/4241 ,  A61B6/4266 ,  A61B6/4283 ,  A61B6/481 ,  A61B6/482 ,  A61B6/5205 ,  A61B6/5217 ,  A61B6/544

Abstract: A radiation imaging system includes a detector including a plurality of pixels which obtain pixel values corresponding to incident radiation transmitted through a subject, and an information processing unit configured to perform a process of estimating information on thicknesses of substances included in the subject using pixel values of an arbitrary one of the plurality of pixels, an average value of energy of radiation quanta of the arbitrary pixel calculated in accordance with the pixel values of the arbitrary pixel, a first table indicating the relationship between the pixel values of the arbitrary pixel and the thicknesses of the substances included in the subject, and a second table indicating the relationship between the average value of the energy of the radiation quanta of the arbitrary pixel and the thicknesses of the substances included in the subject.

Abstract translation: 放射线成像系统包括：检测器，包括多个像素，所述多个像素获得与透过对象的入射放射线对应的像素值;以及信息处理单元，配置为执行估计物质厚度信息的处理 包括在使用多个像素中任意一个像素的像素值的对象中，根据任意像素的像素值计算的任意像素的辐射量子的能量的平均值，指示像素之间的关系的第一表格 包括在对象中的任意像素的值和厚度;以及第二表，表示任意像素的辐射量子的能量的平均值和包括在对象中的物质的厚度之间的关系。 / p>

公开(公告)号：WO2017073041A1

公开(公告)日：2017-05-04

申请号：PCT/JP2016/004669

申请日：2016-10-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： IWASHITA, Atsushi ,  SATO, Sho ,  TERUI, Kosuke ,  ISHII, Yoshiaki

IPC: G01T1/17 ,  A61B6/00 ,  G01N23/04 ,  G01N23/083 ,  G01T1/20

CPC classification number: A61B6/4241 ,  A61B6/4233 ,  G01N23/04 ,  G01T1/17 ,  G01T1/20 ,  G01T1/36

Abstract: In order to provide a large-area radiation imaging apparatus that has an energy resolution while suppressing the occurrence of an artifact, the radiation imaging apparatus includes a detector and a signal processing unit. The detector includes a plurality of pixels for acquiring a pixel value in accordance with incident radiation. The signal processing unit performs signal processing for estimating energy of a radiation quantum of the incident radiation at a predetermined pixel included in the pixels using the amount of change in the pixel value of the predetermined pixel.

Abstract translation: 为了提供在抑制伪影的发生的同时具有能量分辨率的大面积放射线成像设备，放射线成像设备包括检测器和信号处理单元。 检测器包括用于根据入射辐射来获取像素值的多个像素。 信号处理单元使用预定像素的像素值的变化量，执行用于估计包括在像素中的预定像素的入射辐射的辐射量子的能量的信号处理。

公开(公告)号：WO2016194295A1

公开(公告)日：2016-12-08

申请号：PCT/JP2016/002201

申请日：2016-04-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKENAKA, Katsuro ,  IWASHITA, Atsushi ,  TERUI, Kosuke ,  TAKEDA, Shinichi

IPC: G01T1/20 ,  A61B6/00

CPC classification number: H04N5/32 ,  A61B6/4241 ,  A61B6/5205

Abstract: A radiation imaging apparatus is provided. The apparatus comprises a scintillator, a sensor panel in which each including a light detector, and a processing unit. The processing unit generates signals in accordance with the light detected by the light detectors, determines whether signals generated in the same period by a pixel group, which includes one pixel of interest and at least one pixel near the pixel of interest out of the pixels, have a specific distribution, obtains a count of the number of times the pixel of interest is determined to have the specific distribution, and obtains, based on a value obtained by converting the count in accordance with a first and a second coefficient, an incident amount of a first and a second energy band out of radiation irradiating the pixel of interest, respectively.

Abstract translation: 提供了一种放射线成像装置。 该装置包括闪烁器，其中每个包括光检测器的传感器面板和处理单元。 处理单元根据由光检测器检测到的光产生信号，确定包括一个像素组在内的像素组在相同周期内生成的信号，以及像素附近的感兴趣像素附近的至少一个像素， 具有特定分布，获得确定具有特定分布的感兴趣像素次数的计数，并且基于通过根据第一和第二系数转换计数而获得的值来获得事件量 分别辐射照射感兴趣像素的第一和第二能带。