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1.发明授权X-ray examination apparatus with X-ray image sensor matrix and correction unit 失效X射线检查仪X射线图像传感器矩阵和校正单元公开(公告)号：US06246746B1
公开(公告)日：2001-06-12
申请号：US09125482
申请日：1998-08-19
IPC分类号： H04N100
CPC分类号： H04N5/325 , H04N5/3597
摘要： An x-ray examination apparatus comprises an x-ray image sensor matrix (1) for deriving an initial image signal from the x-ray image. The sensor elements of the x-ray sensor matrix convert incident x-rays into electric charges. These electric charges are read-out and converted into the initial image signal. Further a correction unit (2) is provided for correcting the initial image signal, notably for disturbances due to delayed transferred charges, that have been retained in the sensor elements for some time. The correction unit (2) is provided with a memory which stores correction values. Further the correction provided with a selection unit (5) for selecting appropriate correction values from the memory (3).
摘要翻译： x射线检查装置包括用于从x射线图像导出初始图像信号的x射线图像传感器矩阵（1）。 X射线传感器矩阵的传感器元件将入射的X射线转换成电荷。 这些电荷被读出并转换成初始图像信号。 此外，提供校正单元（2），用于校正已经保留在传感器元件中一段时间的初始图像信号，特别是用于由于延迟传送的电荷引起的干扰。 校正单元（2）设置有存储校正值的存储器。 此外，还提供了用于从存储器（3）中选择适当的校正值的选择单元（5）。
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公开(公告)号：US6075247A
公开(公告)日：2000-06-13
申请号：US3039
申请日：1998-01-05
CPC分类号： H01L27/14658 , G01T1/2928
摘要： A medical X-ray apparatus is provided with image detector elements 30 which are arranged in a matrix of rows and columns. In order to improve the noise behaviour of the read amplifiers 46 during the reading per row, a plurality of column conductors 36 is provided per column so that the read time is prolonged in proportion to the number of column conductors and the stray capacitance is reduced proportionally. Both steps reduce the noise in known manner. In the case of an integrated implementation, the conductors for driving the reading per row cannot be arranged arbitrarily close to one another because of their mutual capacitance, so that these conductors require a comparatively large surface area. In order to make a smaller surface area suffice for these conductors, according to the invention each read driver 42 is connected to at least two rows of image detector elements 30 which are not associated with the same column conductor, the number of rows thus connected to one read driver being at the most equal to the number of groups of image detector elements in one column.
摘要翻译： 医疗X射线装置设置有以行和列为矩阵排列的图像检测器元件30。 为了改善每行读取期间读取放大器46的噪声行为，每列提供多个列导体36，使得读取时间与列导体的数目成比例地延长，杂散电容成比例地减小 。 两个步骤以已知的方式降低了噪音。 在集成实现的情况下，用于驱动每行读数的导体由于它们的互电容而不能彼此任意地彼此布置，使得这些导体需要相当大的表面积。 为了使这些导体的表面积更小，根据本发明，每个读取驱动器42连接到至少两行不与同一列导体相关联的图像检测器元件30，这样连接的行数 一个读取驱动器最多等于一列中图像检测器元件的数量的数量。
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3.发明授权Image detection device having correction circuit for removing artifacts due to delayed charge transfer 失效图像检测装置具有用于去除由于延迟的电荷转移引起的假象的校正电路
公开(公告)号：US5530238A
公开(公告)日：1996-06-25
申请号：US299774
申请日：1994-09-01
CPC分类号： H04N5/3651 , H04N5/32
摘要： An image detection device, notably a semiconductor image detection array for detecting x-ray images, is provided wherein perturbations due to phantom-images are substantially mitigated. In such an image detection array incident image carrying radiation is converted into charges. Delayed charge transfer due to trapping of charges in the semiconductor material of radiation sensor elements causes such perturbations. In an image detection device according to the invention a correction circuit is provided which is arranged to form an image correction signal being representative of delayed transferred charges. In a particular embodiment of an image detection device according to the invention the image correction signal is formed as a superposition of exponentially decaying signals of images which were detected before the detection of a currently detected image. An image signal containing artifacts due to delayed charge transfer is formed by a read-out circuit whereto charges formed by the radiation sensor elements are transferred. A corrected image signal is subsequently formed from the image correction signal and the signal formed by the multiplex circuit.
摘要翻译： 提供了一种图像检测装置，特别是用于检测x射线图像的半导体图像检测阵列，其中大大减轻了由于幻影图像引起的扰动。 在这种图像检测阵列中，携带辐射的入射图像被转换为电荷。 由于在辐射传感器元件的半导体材料中捕获电荷引起的延迟电荷转移导致这种扰动。 在根据本发明的图像检测装置中，提供了一种校正电路，其被布置成形成表示延迟传送电荷的图像校正信号。 在根据本发明的图像检测装置的特定实施例中，图像校正信号形成为在检测到当前检测到的图像之前检测到的图像的指数衰减信号的叠加。 通过读出电路形成包含由于延迟的电荷转移引起的假象的图像信号，由此辐射传感器元件形成的电荷被传送。 随后由图像校正信号和由多路复用电路形成的信号形成校正后的图像信号。
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公开(公告)号：US6021173A
公开(公告)日：2000-02-01
申请号：US50486
申请日：1998-03-30
IPC分类号： H01L31/09 , G01T1/20 , H01L27/14 , H01L27/146 , H05G1/64
CPC分类号： H01L27/14676 , H01L27/14658
摘要： An x-ray examination apparatus comprises an x-ray detector with a sensor matrix for deriving an image signal from an x-ray image. The x-ray detector is provided with a scatter grid having a regular pattern of x-ray attenuating partitions. The spatial resolution of the sensor matrix is such that the size of the smallest detectable detail in the x-ray image is larger than the distance between adjacent partitions. In particular the x-ray detector comprises an x-ray sensitive photoconductor layer for converting x-rays into electric charges, separate sensor elements include respective collecting electrodes and a semiconductor cladding layer being disposed between the photoconductor layer and the collecting electrodes. The semiconductor cladding layer has a substantial lateral electric conductivity. For example, the semiconductor cladding layer is a chlorine doped selenium layer, or a selenium, sulphur or telluride doped lead-oxide layer.
摘要翻译： X射线检查装置包括具有用于从X射线图像导出图像信号的传感器矩阵的x射线检测器。 X射线检测器设置有具有x射线衰减分区的规则图案的散射格栅。 传感器矩阵的空间分辨率使得x射线图像中最小可检测细节的大小大于相邻分区之间的距离。 特别地，x射线检测器包括用于将x射线转换成电荷的x射线敏感光电导体层，分离的传感器元件包括相应的集电极和设置在光电导体层和收集电极之间的半导体包层。 半导体包覆层具有显着的横向电导率。 例如，半导体包覆层是掺杂氯的硒层，或硒，硫或碲化物掺杂的氧化铅层。
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5.发明授权Method of manufacturing a scintillator and a scintillator layer thus manufactured 失效制造如此制造的闪烁体和闪烁体层的方法公开(公告)号：US06252927B1
公开(公告)日：2001-06-26
申请号：US09428775
申请日：1999-10-28
IPC分类号： G01T120
CPC分类号： A61B6/032 , A61B6/4085 , G01T1/2002 , G01T1/202 , G01T1/2985
摘要： In order to manufacture a scintillator layer for a detector for the detection of electromagnetic radiation, transmitted by an object, which has a high spatial resolution and only a slight interaction between the scintillator elements, it is proposed to pour a molten mass of a radiation-absorbing metal, having a melting point below 350° C., into intermediate spaces which extend vertically between neighboring scintillator elements.
摘要翻译： 为了制造用于检测电磁辐射的检测器的闪烁体层，由具有高空间分辨率且仅在闪烁体元件之间仅有轻微相互作用的物体传输，建议将辐射 - 将熔点低于350℃的金属吸收到相邻闪烁体元件之间垂直延伸的中间空间中。
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公开(公告)号：US08386011B2
公开(公告)日：2013-02-26
申请号：US12672077
申请日：2008-08-06
IPC分类号： A61B5/00
CPC分类号： A61B5/1127 , A61B5/055 , A61B5/706 , A61B6/037 , A61B6/4258 , A61B90/39 , A61B2090/3937 , A61B2090/3945
摘要： In a medical system, at least one medically operative member (10, 12, 100) is configured to interact with or acquire data from a subject (74) disposed in an examination region. An array of photosensors (70, 170) is disposed on the at least one medically operative member. The array of photosensors is arranged to view the examination region. A position-determining member (82, 82a, 82b) is configured to determine a position of at least one optically detectable marker (72, 172) disposed with the subject in the examination region based on light from the at least one optically detectable marker sensed by the array of photosensors.
摘要翻译： 在医疗系统中，至少一个医疗操作的构件（10,12,100）配置成与设置在检查区域中的被检体（74）相互作用或从其获取数据。 一组光传感器（70,170）设置在至少一个医疗操作部件上。 安排了一系列光传感器来查看检查区域。 位置确定构件（82,82a，82b）被配置为基于所检测到的至少一个光学可检测标记的光来确定在检查区域中与受检者一起设置的至少一个光学可检测标记（72,172）的位置 通过光电传感器阵列。
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公开(公告)号：US20120033864A1
公开(公告)日：2012-02-09
申请号：US13203515
申请日：2010-02-09
IPC分类号： G06K9/00
CPC分类号： G06T7/0081 , A61B5/055 , A61B6/00 , A61B6/03 , A61B6/037 , A61B6/507 , A61B6/541 , G06T7/11 , G06T2207/10108 , G06T2207/30048 , G06T2207/30101
摘要： A patient (14), at rest, is injected with a first isotope tracer. After a first uptake period, the patient is stressed and injected with a second isotope tracer. After a second isotope tracer uptake period, first and second isotope imaging data are concurrently detected by data acquiring devices (16). The first and second isotope imaging data are reconstructed into a first or rest state image, a second or stressed state image, and optionally a combined first and second isotope image. The image with the better image statistics is segmented to generate segmentation parameters, which segmentation parameters are applied to both the first or rest and second or stressed state images. In this manner, an image whose image statistics may be too weak for accurate segmentation is accurately segmented by generating two inherently aligned images and applying the same segmentation parameters to both.
摘要翻译： 静止的患者（14）注射第一同位素示踪剂。 在第一次摄取期后，患者受压并注射第二同位素示踪剂。 在第二同位素示踪剂摄取期之后，第一和第二同位素成像数据由数据获取装置（16）同时检测。 第一和第二同位素成像数据被重建成第一或静止状态图像，第二或应力状态图像，以及可选地组合的第一和第二同位素图像。 具有更好的图像统计的图像被分割以生成分割参数，这些分割参数被应用于第一或第二或应力状态图像。 以这种方式，通过产生两个固有排列的图像并且将相同的分割参数应用于两者，精确地分割图像统计可能太弱以进行精确分割的图像。
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公开(公告)号：US08774474B2
公开(公告)日：2014-07-08
申请号：US13203515
申请日：2010-02-09
CPC分类号： G06T7/0081 , A61B5/055 , A61B6/00 , A61B6/03 , A61B6/037 , A61B6/507 , A61B6/541 , G06T7/11 , G06T2207/10108 , G06T2207/30048 , G06T2207/30101
摘要： A patient (14), at rest, is injected with a first isotope tracer. After a first uptake period, the patient is stressed and injected with a second isotope tracer. After a second isotope tracer uptake period, first and second isotope imaging data are concurrently detected by data acquiring devices (16). The first and second isotope imaging data are reconstructed into a first or rest state image, a second or stressed state image, and optionally a combined first and second isotope image. The image with the better image statistics is segmented to generate segmentation parameters, which segmentation parameters are applied to both the first or rest and second or stressed state images. In this manner, an image whose image statistics may be too weak for accurate segmentation is accurately segmented by generating two inherently aligned images and applying the same segmentation parameters to both.
摘要翻译： 静止的患者（14）注射第一同位素示踪剂。 在第一次摄取期后，患者受压并注射第二同位素示踪剂。 在第二同位素示踪剂摄取期之后，第一和第二同位素成像数据由数据获取装置（16）同时检测。 第一和第二同位素成像数据被重建成第一或静止状态图像，第二或应力状态图像，以及可选地组合的第一和第二同位素图像。 具有更好的图像统计的图像被分割以生成分割参数，这些分割参数被应用于第一或第二或应力状态图像。 以这种方式，通过产生两个固有排列的图像并且将相同的分割参数应用于两者，精确地分割图像统计可能太弱以进行精确分割的图像。
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公开(公告)号：US20100001190A1
公开(公告)日：2010-01-07
申请号：US11913847
申请日：2006-05-01
CPC分类号： G01T1/1648 , A61B6/037 , A61B6/4258 , G01T1/1642
摘要： An imaging system (10) comprises at least one radiation detector unit (16) disposed adjacent a field of view (20) to detect and measure radiation from the field of view (20). The detector unit (16) includes multiple detection modules (18) which each detects radiation from a prespecified region of the field of view (20), each region being a fraction of the field of view. One or more pinholes (52) are associated with the detector unit (16). Each pinhole (52) receives radiation from the prespecified region of the field of view (20) and transmits radiation to one or more associated detection modules (18).
摘要翻译： 成像系统（10）包括邻近视野（20）设置的至少一个辐射检测器单元（16），用于检测和测量来自视场（20）的辐射。 检测器单元（16）包括多个检测模块（18），每个检测模块检测来自视场（20）的预定区域的辐射，每个区域是视场的一部分。 一个或多个针孔（52）与检测器单元（16）相关联。 每个针孔（52）接收来自视野（20）的预定区域的辐射，并将辐射传输到一个或多个相关联的检测模块（18）。
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公开(公告)号：US08525118B2
公开(公告)日：2013-09-03
申请号：US13454217
申请日：2012-04-24
IPC分类号： G01T1/166
CPC分类号： G01T1/17 , A61B6/027 , A61B6/037 , A61B6/503 , G01T1/1647
摘要： In a disclosed imaging method, the instantaneous speed or data acquisition dwell times of a detector head is optimized as a function of position along a path of the detector head around a subject. The optimization is respective to an expected radioactive emission profile of a region of interest that is less than the entire subject. The detector head is traversed along the path using the optimized instantaneous speed or data acquisition dwell times. During the traversing, imaging data are acquired using the detector head. The acquired imaging data are reconstructed to generate a reconstructed image of at least the region of interest. A gamma camera configured to perform the foregoing imaging method is also disclosed.
摘要翻译： 在公开的成像方法中，检测器头的瞬时速度或数据采集驻留时间被优化为沿着围绕被摄体的检测器头的路径的位置的函数。 优化对于小于整个受试者的感兴趣区域的预期放射性排放曲线。 使用优化的瞬时速度或数据采集驻留时间，沿着路径遍历检测器头。 在运行期间，使用检测器头获取成像数据。 所获取的成像数据被重建以生成至少感兴趣的区域的重建图像。 还公开了配置成执行上述成像方法的γ照相机。
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