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1. 发明公开

EP2703843A4 CALIBRATION DEVICE FOR PHOTON COUNTING RADIATION DETECTOR AND CALIBRATION METHOD THEREOF 审中-公开
标题翻译：检定装置具有光子计数及其方法的辐射检测器
公开(公告)号：EP2703843A4
公开(公告)日：2015-04-01
申请号：EP12774007
申请日：2012-04-20
申请人： TELESYSTEMS CO LTD
发明人： YAMAKAWA TSUTOMU , HASHIMOTO DAISUKE , NAGAOKA HIDEYUKI , NAGANO TATSUYA , TSUJITA MASAHIRO
IPC分类号： G01T1/17 , A61B6/14 , G01T1/24
CPC分类号： A61B6/585 , A61B6/025 , A61B6/032 , A61B6/14 , A61B6/4233 , A61B6/4241 , A61B6/482 , G01T1/171 , G01T1/243

2. 发明公开

EP2703843A1 CALIBRATION DEVICE FOR PHOTON COUNTING RADIATION DETECTOR AND CALIBRATION METHOD THEREOF 审中-公开
标题翻译： KALIBRIUNUNGSVORRICHTUNGFÜREINEN STRAHLUNGSDETEKTOR MITPHOTONENZÄHLUNGUND KALIBRIERVERFAHRENDAFÜR
公开(公告)号：EP2703843A1
公开(公告)日：2014-03-05
申请号：EP12774007.4
申请日：2012-04-20
申请人： Telesystems Co., Ltd.
发明人： YAMAKAWA Tsutomu , HASHIMOTO Daisuke , NAGAOKA Hideyuki , NAGANO Tatsuya , TSUJITA Masahiro
IPC分类号： G01T1/17 , A61B6/14 , G01T1/36 , G01T7/00
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 (S33, S34). Under the setting of this radiation condition, detection sensitivities for the radiation are made uniform among the plurality of detection modules (S35 - S39, S41). 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 (S40, S41).
摘要翻译：提供了一种用于光子计数型辐射探测器的校准装置。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（S33，S34）。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均匀（S35〜S39，S41）。使用这种均匀的结果，由包括多个检测模块，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的电路组形成的每个像素的每个通道的每个通道进一步使辐射的检测灵敏度均匀（S40，S41 ）。

3. 发明公开

EP2570080A1 RADIATION IMAGING APPARATUS AND PHANTOM USED FOR THE SAME 审中-公开
标题翻译：达芬奇（VAR）
公开(公告)号：EP2570080A1
公开(公告)日：2013-03-20
申请号：EP11780600.0
申请日：2011-05-10
申请人： Telesystems Co., Ltd.
发明人： YAMAKAWA,Tsutomu , OGAWA, Koichi , KATSUMATA, Akitoshi , TSUJITA, Masahiro , NAGAOKA, Hideyuki
IPC分类号： A61B6/03 , A61B6/02 , A61B6/14
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：在由全景成像装置提供的成像空间中，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，定义X射线管，检测器和断层扫描平面之间的位置关系的参数（“x /”Fi，¸，“¸/”Fi，D，A，CX，CY）被计算为在参数中考虑连接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。

4. 发明公开

EP2703846A2 Method and apparatus for supplying bias drive voltage to radiation detector 审中-公开
标题翻译： Verfahren und Vorrichtung zur Spannungsversorgung eines Strahlungsdetektors。
公开(公告)号：EP2703846A2
公开(公告)日：2014-03-05
申请号：EP13004262.5
申请日：2013-08-29
申请人： Telesystems Co., Ltd.
发明人： Yamakawa, Tsutomu , Hashimoto, Daisuke , Nagano, Tatsuya , Tsujita, Masahiro
IPC分类号： G01T1/24
CPC分类号： G01T1/24
摘要： A radiation detecting apparatus includes a radiation detector (11), a power source (31), a current detector (32), and a bias voltage adjuster (34). The radiation detector includes a semiconductor layer (21) consisting of a compound semiconductor directly converting an incoming radiation photon to an electric charge and a pair of electrode layers (22, 23) stacked individually on both surfaces of the semiconductor layer. One layer of the paired electrode layers has plural collecting electrodes which enable the semiconductor layer to have one-dimensionally or two-dimensionally arrayed pixels. The power source applies a direct-current bias voltage between the paired electrodes such that the electric charge is collected to one electrode of the pair electrodes. The current detector detects current supplied from the power source when the power source applies the bias voltage between the pair of electrodes. The bias voltage adjuster changes a value of the bias voltage applied by the power source depending on a value of the current detected by the current detector.
摘要翻译：辐射检测装置包括辐射检测器（11），电源（31），电流检测器（32）和偏置电压调节器（34）。辐射检测器包括由直接将入射的辐射光子转换成电荷的化合物半导体组成的半导体层（21）和分别层叠在半导体层的两个表面上的一对电极层（22,23）。成对电极层的一层具有能够使半导体层具有一维或二维排列的像素的多个收集电极。电源在成对电极之间施加直流偏置电压，使得电荷被收集到对电极的一个电极。当电源在一对电极之间施加偏置电压时，电流检测器检测从电源提供的电流。偏置电压调节器根据由电流检测器检测的电流的值改变由电源施加的偏置电压的值。

5. 发明公开

EP2674787A1 RADIATION DETECTOR, AND RADIATION IMAGING APPARATUS PROVIDED WITH DETECTOR 审中-公开
标题翻译： STRAHLUNGSDETEKTOR UNDSTRAHLUNGSABBILDUNGSGERÄTMIT DEM DETEKTOR
公开(公告)号：EP2674787A1
公开(公告)日：2013-12-18
申请号：EP11849981.3
申请日：2011-12-20
申请人： Telesystems Co., Ltd.
发明人： OGAWA Koichi , YAMAKAWA Tsutomu , HASHIMOTO Daisuke , NAGANO Tatsuya , NAGAOKA Hideyuki , TSUJITA Masahiro
IPC分类号： G01T7/00 , A61B6/03 , A61B6/14 , G01T1/24
CPC分类号： G01T1/17 , A61B6/0421 , A61B6/14 , A61B6/4233 , A61B6/4435 , A61B6/4452 , G01T1/2928
摘要： An X-ray detector (22) is provided with a plurality of modules (M) each having a plurality of detection elements (S) 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 (X1) and a first Y-axis (Y1), 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 (X2) and a second Y-axis (Y2) 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（22）具有多个模块（M），每个模块（M）具有多个检测元件（S），每个检测元件构成像素，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形成在其间的已知宽度的间隙的同一表面上，使得模块沿着第一X轴（X1）和第一Y轴（Y1）中的至少一个排列，其中辐射检测器被给予沿着第一X轴和Y轴中的一个设置并且第一Y轴垂直于第一X轴的扫描方向。每个模块的多个检测元件沿着分别设置在第一X轴和第一Y轴上的第二X轴（X2）和第二Y轴（Y2）二维地排列，彼此垂直。

6. 发明公开

EP2465436A1 RADIATION IMAGE PICKUP DEVICE AND IMAGE PICKUP METHOD BY RADIATION 审中-公开
标题翻译：比利时达尔富尔豪斯·德拉姆·德拉姆
公开(公告)号：EP2465436A1
公开(公告)日：2012-06-20
申请号：EP10804517.0
申请日：2010-07-29
申请人： Telesystems Co., Ltd.
发明人： KATSUMATA Akitoshi , OGAWA Koichi , YAMAKAWA Tsutomu , TSUJITA Masahiro , NAGANO Tatsuya , KITOU Kazuhide
IPC分类号： A61B6/14 , A61B6/02
CPC分类号： A61B6/14 , A61B6/025 , A61B6/032 , A61B6/037 , A61B6/145 , A61B6/4021 , A61B6/4241 , A61B6/466 , A61B6/501 , A61B6/5205 , A61B6/5258
摘要： There is provided a panoramic imaging apparatus which serves as a radiation imaging apparatus. The panoramic imaging apparatus includes an X-ray tube (31) radiating an X-ray as a radiation, a detector (32) outputting digital-quantity frame data corresponding to an incident X-ray, and moving means (23, 24) moving the pair of X-ray tube and the detector relatively to an object. The apparatus further includes means (12, 41, 52-57) for acquiring the frame data from the detector during movement of the X-ray tube and the detector, and means (12, 56) for optimally focusing a portion being imaged of the object using the acquired data and producing a three-dimensional optimally focused image in which the real size and shape of the portion being imaged are reflected.
摘要翻译：提供了用作辐射成像装置的全景成像装置。全景成像装置包括：X射线管（31），辐射X射线作为辐射;检测器（32），输出对应于入射X射线的数字量帧数据;以及移动装置（23,24）该对X射线管和检测器相对于物体。该装置还包括用于在X射线管和检测器运动期间从检测器获取帧数据的装置（12,41,52-57），以及用于将被成像的部分进行最佳聚焦的装置（12,56）使用所获取的数据并产生其中反映被成像部分的实际尺寸和形状的三维最佳聚焦图像。

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