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    Radiation detector, and radiation imaging apparatus provided with detector
    1.
    发明授权
    Radiation detector, and radiation imaging apparatus provided with detector 有权
    辐射检测器和放射线成像设备配有检测器

    公开(公告)号：US09389320B2

    公开(公告)日：2016-07-12

    申请号：US13996366

    申请日：2011-12-20

    申请人： Koichi Ogawa ,  Tsutomu Yamakawa ,  Daisuke Hashimoto ,  Tatsuya Nagano ,  Hideyuki Nagaoka ,  Masahiro Tsujita

    发明人： Koichi Ogawa ,  Tsutomu Yamakawa ,  Daisuke Hashimoto ,  Tatsuya Nagano ,  Hideyuki Nagaoka ,  Masahiro Tsujita

    IPC分类号： A61B6/00 ,  G01T1/17 ,  A61B6/14 ,  G01T1/29 ,  A61B6/04

    CPC分类号： G01T1/17 ,  A61B6/0421 ,  A61B6/14 ,  A61B6/4233 ,  A61B6/4435 ,  A61B6/4452 ,  G01T1/2928

    摘要： An X-ray detector is provided with a plurality of modules each having a plurality of detection elements each composing a pixel, in which the detection elements convert incoming radiations to electric data depending on amounts of the radiations. The plural modules are mutually adjacently arranged on the same surface with a gap having a known width formed therebetween, such that the modules are arranged along at least one of a first X-axis and a first Y-axis, wherein the radiation detector is given a scan direction which is set along one of the first X- and Y-axes and the first Y-axis is perpendicular to the first X-axis. The plural detection elements of each module are two-dimensionally arranged along a second X-axis and a second Y-axis which are set obliquely to the first X-axis and the first Y-axis respectively and which are perpendicular to each other.

    摘要翻译： X射线检测器设置有多个模块，每个模块具有各自构成像素的多个检测元件，其中检测元件根据辐射量将进入的辐射转换成电数据。 多个模块相互相邻地布置在具有在其间形成的已知宽度的间隙的相同表面上，使得模块沿着第一X轴和第一Y轴中的至少一个布置，其中给予辐射检测器 沿着第一X轴和Y轴以及第一Y轴中的一个设置的扫描方向垂直于第一X轴。 每个模块的多个检测元件沿着分别相对于第一X轴和第一Y轴倾斜设置并且彼此垂直的第二X轴和第二Y轴二维排列。

    APPARATUS FOR CALIBRATING PHOTON-COUNTING TYPE OF RADIATION DETECTOR AND METHOD OF CALIBRATING THE SAME
    3.
    发明申请
    APPARATUS FOR CALIBRATING PHOTON-COUNTING TYPE OF RADIATION DETECTOR AND METHOD OF CALIBRATING THE SAME 有权
    用于校准光电计数类型的辐射检测器的装置及其校准方法

    公开(公告)号：US20140105370A1

    公开(公告)日：2014-04-17

    申请号：US14111945

    申请日：2012-04-20

    申请人： Tsutomu Yamakawa ,  Daisuke Hashimoto ,  Hideyuki Nagaoka ,  Tatsuya Nagano ,  Masahiro Tsujita

    发明人： Tsutomu Yamakawa ,  Daisuke Hashimoto ,  Hideyuki Nagaoka ,  Tatsuya Nagano ,  Masahiro Tsujita

    IPC分类号： A61B6/00

    CPC分类号： A61B6/585 ,  A61B6/025 ,  A61B6/032 ,  A61B6/14 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/482 ,  G01T1/171 ,  G01T1/243

    摘要： There is provided a calibration apparatus used for a photon counting type of radiation detector. In this apparatus, a radiation condition of a radiation is set such that particles of the radiation (X-rays) which are incident on a plurality of detection modules are piled up over each other at a probability which is equal to or less than a predetermined value. Under the setting of this radiation condition, detection sensitivities for the radiation are made uniform among the plurality of detection modules. Using this uniformed result, the detection sensitivities for the radiation are further made uniform every channel of each of the pixels formed by circuit groups including the plurality of detection modules, discrimination circuits and data calculation circuits and every discrimination circuit in each channel.

    摘要翻译： 提供了一种用于光子计数类型的辐射检测器的校准装置。 在该装置中，放射线的放射状态被设定为使得入射到多个检测模块上的辐射（X射线）的粒子以等于或小于预定的概率堆叠在彼此上 值。 在该放射状态的设定下，在多个检测模块之间使辐射的检测灵敏度一致。 使用这种均匀的结果，每个通道包括多个检测模块，鉴别电路和数据计算电路以及每个通道中的每个鉴别电路，由每个由像素组成的像素的每个通道进一步使辐射的检测灵敏度均匀。

    RADIATION IMAGING APPARATUS AND PHANTOM USED FOR THE SAME
    4.
    发明申请
    RADIATION IMAGING APPARATUS AND PHANTOM USED FOR THE SAME 有权
    辐射成像装置和使用该装置的光源

    公开(公告)号：US20130114799A1

    公开(公告)日：2013-05-09

    申请号：US13696710

    申请日：2011-05-10

    申请人： Tsutomu Yamakawa ,  Koichi Ogawa ,  Akitoshi Katsumata ,  Masahiro Tsujita ,  Hideyuki Nagaoka

    发明人： Tsutomu Yamakawa ,  Koichi Ogawa ,  Akitoshi Katsumata ,  Masahiro Tsujita ,  Hideyuki Nagaoka

    IPC分类号： A61N5/10

    CPC分类号： A61B6/14 ,  A61B6/025 ,  A61B6/027 ,  A61B6/0492 ,  A61B6/4452 ,  A61B6/469 ,  A61B6/547 ,  A61B6/583 ,  A61B6/584 ,  A61B6/588 ,  G06T11/006 ,  G06T2211/436

    摘要： In the imaging space provided by a panoramic imaging apparatus, a phantom is arranged. The phantom is located to a predetermined tomographic plane and includes markers which image known positional information with an X-ray beam. The X-ray beam from an X-ray source is acquired as X-ray transmission data by a detector, and a panoramic image is produced using the data. Based on known positional information of the markers and information of marker positions in the panoramic image, distance information (Rs, Rd) between the X-ray tube and the detector and height information (B1) of the X-ray tube to the detector are calculated. From this calculated results and the acquired data, parameters (Δx/ΔFi, θ, Δθ/ΔFi, D, A, CX, CY) defining positional relationships among the X-ray tube, the detector, and the tomographic plane are calculated such that amounts of changes in the position connecting the X-ray tube and the detector are considered in the parameters. This allows the parameters to be calibrated for 3D image reconstruction.

    摘要翻译： 在由全景成像设备提供的成像空间中，布置了幻影。 该体模位于预定的断层摄影平面，并且包括用X射线束图像已知位置信息的标记。 来自X射线源的X射线束由检测器获取为X射线透射数据，并且使用该数据产生全景图像。 基于标记的已知位置信息和全景图像中的标记位置的信息，X射线管与检测器之间的距离信息（Rs，Rd）和X射线管与检测器的高度信息（B1） 计算。 根据该计算结果和获取的数据，计算定义X射线管，检测器和断层摄影平面之间的位置关系的参数（Deltax / DeltaFi，θ，Deltatheta / DeltaFi，D，A，CX，CY），使得 在参数中考虑连接X射线管和检测器的位置的变化量。 这允许为3D图像重建校准参数。

    Radiation imaging apparatus and phantom used for the same
    5.
    发明授权
    Radiation imaging apparatus and phantom used for the same 有权
    辐射成像设备和幻影使用相同

    公开(公告)号：US09408579B2

    公开(公告)日：2016-08-09

    申请号：US13696710

    申请日：2011-05-10

    申请人： Tsutomu Yamakawa ,  Koichi Ogawa ,  Akitoshi Katsumata ,  Masahiro Tsujita ,  Hideyuki Nagaoka

    发明人： Tsutomu Yamakawa ,  Koichi Ogawa ,  Akitoshi Katsumata ,  Masahiro Tsujita ,  Hideyuki Nagaoka

    IPC分类号： A61B6/14 ,  A61B6/02 ,  G06T11/00 ,  A61B6/00

    CPC分类号： A61B6/14 ,  A61B6/025 ,  A61B6/027 ,  A61B6/0492 ,  A61B6/4452 ,  A61B6/469 ,  A61B6/547 ,  A61B6/583 ,  A61B6/584 ,  A61B6/588 ,  G06T11/006 ,  G06T2211/436

    摘要： In the imaging space provided by a panoramic imaging apparatus, a phantom is arranged. The phantom is located to a predetermined tomographic plane and includes markers which image known positional information with an X-ray beam. The X-ray beam from an X-ray source is acquired as X-ray transmission data by a detector, and a panoramic image is produced using the data. Based on known positional information of the markers and information of marker positions in the panoramic image, distance information (Rs, Rd) between the X-ray tube and the detector and height information (B1) of the X-ray tube to the detector are calculated. From this calculated results and the acquired data, parameters (Δx/ΔFi, θ, Δθ/ΔFi, D, A, CX, CY) defining positional relationships among the X-ray tube, the detector, and the tomographic plane are calculated such that amounts of changes in the position connecting the X-ray tube and the detector are considered in the parameters. This allows the parameters to be calibrated for 3D image reconstruction.

    摘要翻译： 在由全景成像设备提供的成像空间中，布置了幻影。 该体模位于预定的断层摄影平面，并且包括用X射线束图像已知位置信息的标记。 来自X射线源的X射线束由检测器获取为X射线透射数据，并且使用该数据产生全景图像。 基于标记的已知位置信息和全景图像中的标记位置的信息，X射线管与检测器之间的距离信息（Rs，Rd）和X射线管与检测器的高度信息（B1） 计算。 根据该计算结果和所获取的数据，计算定义X射线管，检测器和断层摄影平面之间的位置关系的参数（Δx/ΔFi，θ，Δθ/ΔFi，D，A，CX，CY），使得 在参数中考虑连接X射线管和检测器的位置的变化量。 这允许为3D图像重建校准参数。

    RADIATION IMAGING APPARATUS AND IMAGING METHOD USING RADIATION
    6.
    发明申请
    RADIATION IMAGING APPARATUS AND IMAGING METHOD USING RADIATION 有权
    辐射成像装置和使用辐射的成像方法

    公开(公告)号：US20120328071A1

    公开(公告)日：2012-12-27

    申请号：US13387827

    申请日：2010-08-05

    申请人： Akitoshi Katsumata ,  Koichi Ogawa ,  Tsutomu Yamakawa ,  Masahiro Tsujita ,  Tatsuya Nagano ,  Kazuhide Kitou

    发明人： Akitoshi Katsumata ,  Koichi Ogawa ,  Tsutomu Yamakawa ,  Masahiro Tsujita ,  Tatsuya Nagano ,  Kazuhide Kitou

    IPC分类号： A61B6/14 ,  A61B6/03

    CPC分类号： A61B6/14 ,  A61B6/037 ,  A61B6/4028 ,  A61B6/469 ,  A61B6/5223

    摘要： A radiation imaging apparatus is provided. The apparatus has moving means moving a pair of an X-ray tube and a detector relatively to an object. The apparatus further has means which acquire digital frame data outputted from the detector. The frame data are acquired from the same portion being imaged of the same object at different time points. The apparatus has means which use the frame data to produce a plurality of three-dimensional optimally focused images at the respective time points, an actual position and shape of the portion being imaged being reflected in the images, and means which estimate changes of the plural three-dimensional optimally focused images.

    摘要翻译： 提供了一种放射线成像装置。 该装置具有相对于物体移动一对X射线管和检测器的移动装置。 该装置还具有获取从检测器输出的数字帧数据的装置。 从在不同时间点对同一对象成像的相同部分获取帧数据。 该装置具有使用帧数据在各个时间点产生多个三维最佳聚焦图像的装置，被成像部分的实际位置和形状被反映在图像中，以及估计多个图像的变化的装置 三维最佳聚焦图像。

    Radiation imaging apparatus and imaging method using radiation
    7.
    发明授权
    Radiation imaging apparatus and imaging method using radiation 有权
    辐射成像设备和使用辐射的成像方法

    公开(公告)号：US09084568B2

    公开(公告)日：2015-07-21

    申请号：US13387827

    申请日：2010-08-05

    申请人： Akitoshi Katsumata ,  Koichi Ogawa ,  Tsutomu Yamakawa ,  Masahiro Tsujita ,  Tatsuya Nagano ,  Kazuhide Kitou

    发明人： Akitoshi Katsumata ,  Koichi Ogawa ,  Tsutomu Yamakawa ,  Masahiro Tsujita ,  Tatsuya Nagano ,  Kazuhide Kitou

    IPC分类号： A61B6/14 ,  A61B6/00 ,  A61B6/03

    CPC分类号： A61B6/14 ,  A61B6/037 ,  A61B6/4028 ,  A61B6/469 ,  A61B6/5223

    摘要： A radiation imaging apparatus is provided. The apparatus has moving means moving a pair of an X-ray tube and a detector relatively to an object. The apparatus further has means which acquire digital frame data outputted from the detector. The frame data are acquired from the same portion being imaged of the same object at different time points. The apparatus has means which use the frame data to produce a plurality of three-dimensional optimally focused images at the respective time points, an actual position and shape of the portion being imaged being reflected in the images, and means which estimate changes of the plural three-dimensional optimally focused images.

    摘要翻译： 提供了一种放射线成像装置。 该装置具有相对于物体移动一对X射线管和检测器的移动装置。 该装置还具有获取从检测器输出的数字帧数据的装置。 从在不同时间点对同一对象成像的相同部分获取帧数据。 该装置具有使用帧数据在各个时间点产生多个三维最佳聚焦图像的装置，被成像部分的实际位置和形状被反映在图像中，以及估计多个图像的变化的装置 三维最佳聚焦图像。