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1.发明授权Methods and apparatus for providing signal dependent offset and gain adjustments for a solid state X-ray detector 有权用于为固态X射线检测器提供信号相关偏移和增益调整的方法和装置公开(公告)号：US06798864B2
公开(公告)日：2004-09-28
申请号：US10063181
申请日：2002-03-28
申请人： Scott William Petrick , Rowland Frederick Saunders , Richard Gordon Cronce , Jeffrey Alan Kautzer
发明人： Scott William Petrick , Rowland Frederick Saunders , Richard Gordon Cronce , Jeffrey Alan Kautzer
IPC分类号： H05G164
摘要： Methods and apparatus are provided in a diagnostic X-ray system for reducing signal conversion time for a solid-state detector panel of the X-ray system in order to increase frame rate. A measurement of a set of induced signal offsets caused by time varying charge retention associated with the detector panel is performed during a phantom time segment prior to normal signal readout of the detector panel for a current image frame. A set of adjustment values is generated in response to the set of induced signal offsets. Subsets of signal values of the detector panel are read out to a pre-determined signal dynamic range as part of normal signal readout of the detector panel in response to the set of adjustment values, thus generating a set of normalized detector signals.
摘要翻译： 在诊断X射线系统中提供了用于降低X射线系统的固态检测器面板的信号转换时间的方法和装置，以便提高帧速率。 在针对当前图像帧的检测器面板的正常信号读出之前，在幻影时间段期间执行由与检测器面板相关联的时变电荷保持引起的一组感应信号偏移的测量。 响应于感应信号偏移的集合产生一组调整值。 检测器面板的信号值的子集作为响应于该组调整值的检测器面板的正常信号读出的一部分被读出到预定的信号动态范围，从而产生一组归一化的检测器信号。
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公开(公告)号：US06642524B2
公开(公告)日：2003-11-04
申请号：US09683497
申请日：2002-01-09
IPC分类号： G01T124
CPC分类号： G01T1/2018 , H01L31/02322 , H01L31/115
摘要： An improved design for a solid state X-ray detector that decreases the amount of moisture diffusion that occurs through seals used to attach a cover to a glass substrate panel, thereby protecting the scintillator from moisture damage. In one embodiment, a second hermetic or semi-hermetic seal is introduced between the scintillator and the outside environment to increase the path moisture must travel to reach the scintillator. In another embodiment, a metal frame, preferably a Kovar® frame, is hermetically or semi-hermetically sealed to the cover and glass substrate panel, thereby decreasing the amount of moisture diffusion through the semi-hermetic seal as compared to the prior art.
摘要翻译： 用于固态X射线检测器的改进的设计，其减少通过用于将盖附接到玻璃基板的密封件发生的水分扩散量，从而保护闪烁体免受水分损害。 在一个实施例中，在闪烁体和外部环境之间引入第二密封或半密封以增加必须行进的路径以到达闪烁体。 在另一个实施例中，与现有技术相比，金属框架，优选科瓦框架被气密或半密封地密封到盖和玻璃基板面板，从而减少了通过半封闭密封件的水分扩散量 。
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3.发明申请公开(公告)号：US20110051902A1
公开(公告)日：2011-03-03
申请号：US12550881
申请日：2009-08-31
申请人： James Zhengshe Liu , Rowland Frederick Saunders , Jon Charles Omernick , Rajendra Shirish Jadhav , Huayi Wang , Gary Vernon McBroom
发明人： James Zhengshe Liu , Rowland Frederick Saunders , Jon Charles Omernick , Rajendra Shirish Jadhav , Huayi Wang , Gary Vernon McBroom
CPC分类号： A61B6/4411 , A61B6/06 , A61B6/4283 , A61B6/4405 , A61B6/508 , A61B6/547
摘要： An x-ray grid alignment circuit for coupling an x-ray grid to a detector includes a marker configured to be mounted to the x-ray grid, a sensor configured to be mounted to the detector, the sensor generating an alignment signal based on a position of the marker, and an alignment module configured to receive the alignment signal from the sensor and utilize the alignment signal to determine if the x-ray grid is coupled to a detecting face of the detector. A detector assembly including the x-ray grid alignment circuit and a method of coupling an x-ray grid to a detector are also provided.
摘要翻译： 一种用于将x射线栅格耦合到检测器的X射线栅格对准电路，包括：被配置为安装到x射线栅格的标记，被配置为安装到检测器的传感器，所述传感器基于 所述标记的位置以及配置成从所述传感器接收所述对准信号并利用所述对准信号来确定所述x射线栅格是否耦合到所述检测器的检测面的对准模块。 还提供了一种包括x射线栅格对准电路和将x射线栅格耦合到检测器的方法的检测器组件。
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公开(公告)号：US09101316B2
公开(公告)日：2015-08-11
申请号：US13308317
申请日：2011-11-30
申请人： James Zhengshe Liu , Kenneth Scott Kump , Gireesha C. Rao , Francisco Ruiz Gomez , Xianfeng Ni , Rowland Frederick Saunders
发明人： James Zhengshe Liu , Kenneth Scott Kump , Gireesha C. Rao , Francisco Ruiz Gomez , Xianfeng Ni , Rowland Frederick Saunders
CPC分类号： A61B6/4233 , A61B6/4283 , A61B6/4405 , A61B6/4494 , A61B6/56
摘要： A portable detector for use with an imaging system is disclosed. The portable detector automatically sets one or more operational states based on at least a determination as to whether the portable detector is connected to external power. An imaging system is also disclosed that ascertains whether the portable detector is connected via a tether. The imaging system may perform a compatibility check when connected to the portable detector to assess compatibility between the imaging system and the portable detector.
摘要翻译： 公开了一种用于成像系统的便携式检测器。 便携式检测器至少基于关于便携式检测器是否连接到外部电源的确定来自动设置一个或多个操作状态。 还公开了一种确定便携式检测器是否经由系绳连接的成像系统。 当连接到便携式检测器时，成像系统可以执行兼容性检查，以评估成像系统和便携式检测器之间的兼容性。
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公开(公告)号：US07724875B2
公开(公告)日：2010-05-25
申请号：US11875427
申请日：2007-10-19
IPC分类号： G01N23/04 , G01N23/087
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4233 , A61B6/488 , A61B6/505 , A61B6/5241
摘要： A technique for establishing texture metrics and bone mineral density (BMD) within an anatomical region of interest. A digital imaging system is used to acquire a standard digital X-ray image with a wide field of view. The standard digital X-ray image is used to guide the imaging system to obtain an image of a region of interest. The standard digital X-ray image is used to calculate various texture metrics, such as a length of a fracture. A dual-energy digital X-ray image of the region of interest is acquired. The dual-energy digital X-ray image is corrected for scatter. The BMD of the region of interest may be established from the scatter-corrected dual-energy digital X-ray image. The BMD, the texture metrics, and/or the scatter-corrected dual-energy X-ray image may be displayed on the standard digital X-ray image.
摘要翻译： 用于在感兴趣的解剖区域内建立纹理度量和骨矿物质密度（BMD）的技术。 数字成像系统用于获取具有广泛视野的标准数字X射线图像。 标准数字X射线图像用于引导成像系统以获得感兴趣区域的图像。 标准数字X射线图像用于计算各种纹理度量，例如断裂长度。 获取感兴趣区域的双能量数字X射线图像。 双能数字X射线图像被校正用于散射。 感兴趣区域的BMD可以从散射校正的双能数字X射线图像建立。 可以在标准数字X射线图像上显示BMD，纹理度量和/或散射校正的双能量X射线图像。
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6.发明申请SYSTEM AND METHOD OF LOW DOSE EXPOSURE AIDED POSITIONING (LEAP) FOR DIGITAL RADIOGRAPHY 审中-公开低剂量曝光辅助定位系统及方法（LEAP）数字放射学公开(公告)号：US20120155609A1
公开(公告)日：2012-06-21
申请号：US12972915
申请日：2010-12-20
IPC分类号： G01N23/04
CPC分类号： A61B6/032 , A61B6/4283 , A61B6/488
摘要： A system and method for improved imaging of a subject through the use of low dose exposure aided positioning is provided. The subject is positioned in an X-ray imaging system and imaged with a low dose pre-shot X-ray exposure to verify the positioning of the subject. If the subject's positioning is acceptable, the subject is then imaged with a full dose X-ray exposure. If the subject's positioning is not acceptable, the subject is repositioned and re-imaged with a low dose pre-shot X-ray exposure until the subject's positioning is acceptable. The low dose pre-shot X-ray exposure may take the form of a low dose X-ray imaging sequence where the radiation dose is less than the radiation dose of a full dose X-ray exposure.
摘要翻译： 提供了一种通过使用低剂量曝光辅助定位来改善受试者成像的系统和方法。 将受试者定位在X射线成像系统中并用低剂量预注射X射线曝光成像，以验证受试者的定位。 如果受试者的定位是可接受的，则用全剂量X射线曝光来拍摄对象。 如果受试者的定位不可接受，则用低剂量预注射X射线曝光重新定位并重新拍摄被摄体，直到受试者的定位是可接受的。 低剂量预注射X射线暴露可以采取低剂量X射线成像序列的形式，其中辐射剂量小于全剂量X射线暴露的辐射剂量。
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公开(公告)号：US07455455B2
公开(公告)日：2008-11-25
申请号：US11391784
申请日：2006-03-29
IPC分类号： A61B6/04
CPC分类号： A61B6/04 , A61B6/0492 , A61B6/10
摘要： A patient barrier is described. The patient barrier includes a footstep configured to support a patient and placed on a floor, a frame attached to the footstep and configured to separate the patient from an energy receptor The patient barrier includes at least one of a first pivot configured to pivot the patient barrier with respect to the floor, and a support bar coupled to the frame, configured to support an arm of the patient, and pivot with respect to the frame.
摘要翻译： 描述患者屏障。 患者屏障包括构造成支撑患者并放置在地板上的脚步，附接到脚步的框架并且构造成将患者与能量受体分离。患者屏障包括构造成枢转病人屏障的第一枢轴中的至少一个 以及联接到框架的支撑杆，构造成支撑患者的手臂并相对于框架枢转。
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公开(公告)号：US6115451A
公开(公告)日：2000-09-05
申请号：US218194
申请日：1998-12-22
CPC分类号： G01T1/17
摘要： Described herein is a method of radiographic imaging providing low access time prior to the start of a user-requested X-ray exposure, while at the same time reducing or eliminating the imaging artifacts associated with short access times. The method includes the steps of exposing a radiographic detector for a time period t.sub.e ; reading the radiographic detector to obtain an exposure reading; reading the radiographic detector to obtain an offset reading, wherein the offset reading is obtained after a time period t.sub.w greater than t.sub.e ; and subtracting the offset reading from the exposure reading. Where the detector is subjected to readings lasting for periods t.sub.r prior to taking the exposure reading, detector readings lasting for t.sub.r are also taken during t.sub.w. After the final t.sub.r reading is taken during t.sub.w, the offset reading is then preferably taken after a period equal to t.sub.e. As a result, approximately the same detector sampling scheme is used both prior to and after the exposure reading (i.e., approximately the same operating conditions are imposed on the detector prior to the exposure reading and the offset reading), thereby providing more accurate offset readings and less image artifacts when the offset reading is subtracted from the exposure reading.
摘要翻译： 本文描述了一种放射摄影成像方法，其在开始用户请求的X射线曝光之前提供低访问时间，同时减少或消除与短访问时间相关联的成像伪影。 该方法包括以下步骤：将射线检测器曝光一段时间; 读取放射线检测器以获得曝光读数; 读取放射线检测器以获得偏移读数，其中在大于te的时间段tw之后获得偏移读数; 并从曝光读数中减去偏移读数。 在采集曝光读数之前检测器经受持续时间段tr的读数的情况下，在tw期间也将采集持续到tr的检测器读数。 在tw期间进行最终tr读取之后，偏移读数优选在等于te的时间之后进行。 因此，在曝光读数之前和之后使用大致相同的检测器采样方案（即，在曝光读数和偏移读数之前，大致相同的操作条件施加在检测器上），从而提供更准确的偏移读数 并且当从曝光读数中减去偏移读数时，减少图像伪影。
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9.发明授权公开(公告)号：US08172461B2
公开(公告)日：2012-05-08
申请号：US12550881
申请日：2009-08-31
申请人： James Zhengshe Liu , Rowland Frederick Saunders , Jon Charles Omernick , Rajendra Shirish Jadhav , Huayi Wang , Gary Vernon McBroom
发明人： James Zhengshe Liu , Rowland Frederick Saunders , Jon Charles Omernick , Rajendra Shirish Jadhav , Huayi Wang , Gary Vernon McBroom
IPC分类号： G21K1/00
CPC分类号： A61B6/4411 , A61B6/06 , A61B6/4283 , A61B6/4405 , A61B6/508 , A61B6/547
摘要： An x-ray grid alignment circuit for coupling an x-ray grid to a detector includes a marker configured to be mounted to the x-ray grid, a sensor configured to be mounted to the detector, the sensor generating an alignment signal based on a position of the marker, and an alignment module configured to receive the alignment signal from the sensor and utilize the alignment signal to determine if the x-ray grid is coupled to a detecting face of the detector. A detector assembly including the x-ray grid alignment circuit and a method of coupling an x-ray grid to a detector are also provided.
摘要翻译： 一种用于将x射线栅格耦合到检测器的X射线栅格对准电路，包括：被配置为安装到x射线栅格的标记，被配置为安装到检测器的传感器，所述传感器基于 所述标记的位置以及配置成从所述传感器接收所述对准信号并利用所述对准信号来确定所述x射线栅格是否耦合到所述检测器的检测面的对准模块。 还提供了一种包括x射线栅格对准电路和将x射线栅格耦合到检测器的方法的检测器组件。
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公开(公告)号：US20090103679A1
公开(公告)日：2009-04-23
申请号：US11875427
申请日：2007-10-19
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4233 , A61B6/488 , A61B6/505 , A61B6/5241
摘要： A technique for establishing texture metrics and bone mineral density (BMD) within an anatomical region of interest. A digital imaging system is used to acquire a standard digital X-ray image with a wide field of view. The standard digital X-ray image is used to guide the imaging system to obtain an image of a region of interest. The standard digital X-ray image is used to calculate various texture metrics, such as a length of a fracture. A dual-energy digital X-ray image of the region of interest is acquired. The dual-energy digital X-ray image is corrected for scatter. The BMD of the region of interest may be established from the scatter-corrected dual-energy digital X-ray image. The BMD, the texture metrics, and/or the scatter-corrected dual-energy X-ray image may be displayed on the standard digital X-ray image.
摘要翻译： 用于在感兴趣的解剖区域内建立纹理度量和骨矿物质密度（BMD）的技术。 数字成像系统用于获取具有广泛视野的标准数字X射线图像。 标准数字X射线图像用于引导成像系统以获得感兴趣区域的图像。 标准数字X射线图像用于计算各种纹理度量，例如断裂长度。 获取感兴趣区域的双能量数字X射线图像。 双能数字X射线图像被校正用于散射。 感兴趣区域的BMD可以从散射校正的双能数字X射线图像建立。 可以在标准数字X射线图像上显示BMD，纹理度量和/或散射校正的双能量X射线图像。
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