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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：US06989538B2
公开(公告)日：2006-01-24
申请号：US10604454
申请日：2003-07-22
摘要： A method of maintaining an initial bias of an x-ray detector (12) includes setting the initial bias of the x-ray detector. Operating state of a readout circuit (30) is altered. A photodiode common contact voltage potential is adjusted by a data line drift amount to approximately maintain the initial bias. An x-ray imaging system (10) includes a detector (12) that has multiple pixels, multiple data lines (50), and a common contact (62) that is at a common contact voltage potential. The readout circuit (30) is electrically coupled to the data lines (50) and has a multiple power states. A controller (36) is electrically coupled to the readout circuit (30), detects a change in operating state of the readout circuit (30), and adjusts voltage potential of the common contact (62) in response to the change in operating state.
摘要翻译： 保持x射线检测器（12）的初始偏置的方法包括设置x射线检测器的初始偏置。 改变读出电路（30）的工作状态。 通过数据线漂移量来调节光电二极管公共接触电压电位，以大致维持初始偏压。 X射线成像系统（10）包括具有多个像素的检测器（12），多个数据线（50）和处于公共接触电压电位的公共接触（62）。 读出电路（30）电耦合到数据线（50）并且具有多个功率状态。 控制器（36）电耦合到读出电路（30），检测读出电路（30）的工作状态的改变，并且响应于操作状态的改变来调节公共触头（62）的电压电位。
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公开(公告)号：US06713769B2
公开(公告)日：2004-03-30
申请号：US09683738
申请日：2002-02-07
申请人： Habib Vafi , Richard Gordon Cronce , Scott William Petrick , Jeffrey Alan Kautzer , David Conrad Neumann
发明人： Habib Vafi , Richard Gordon Cronce , Scott William Petrick , Jeffrey Alan Kautzer , David Conrad Neumann
IPC分类号： G01T124
CPC分类号： A61B6/42 , A61B6/4488
摘要： An X-ray imaging system that utilizes the leakage, or dark current, of a detector panel's photodiodes to provide more accurate data about the temperature and spatial distribution of temperature of the X-ray detector panel. Offset images are taken at known temperatures and recorded for each photodiode at two or more known temperatures. A temperature versus offset image value curve is the created for each photodiode. A second offset image value is determined immediately prior to or immediately after X-ray acquisition to determine the temperature of the detector panel at the time of X-ray acquisition. A coupled closed-loop cooling system utilizes the determined temperature to maintain the detector panel within a preferred temperature range.
摘要翻译： 使用检测器面板的光电二极管的泄漏或暗电流的X射线成像系统提供关于X射线检测器面板的温度和空间分布的更准确的数据。 在已知温度下拍摄偏移图像，并在两个或更多已知温度下记录每个光电二极管。 温度对偏移图像值曲线是为每个光电二极管创建的。 在X射线获取之前或之后立即确定第二偏移图像值，以确定在X射线获取时检测器面板的温度。 耦合的闭环冷却系统利用确定的温度将检测器面板保持在优选的温度范围内。
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4.发明授权Method and apparatus for correcting the offset induced by field effect transistor photo-conductive effects in a solid state x-ray detector 失效用于校正由固态X射线检测器中的场效应晶体管光导效应引起的偏移的方法和装置公开(公告)号：US06618604B2
公开(公告)日：2003-09-09
申请号：US09752854
申请日：2000-12-28
IPC分类号： A61B5058
CPC分类号： A61B6/032 , A61B6/583 , A61B6/585 , H04N5/32 , H04N5/3597
摘要： A method and apparatus for correcting the offset induced by Field Effect Transistor (FET) photo-conductive effects in solid state x-ray detectors includes dedicating rows at the beginning and end of an x-ray detector scan. The dedicated rows may be used to measure the “signal” induced by the photo-conductivity of FET switches in solid state x-ray detectors. Since the signal induced by FET photo-conductivity decays over time, the measurements taken at the beginning and end of a detector scan may be used to predict by interpolation the amount of signal contributed by photo-conductive induced offset for each row of the detector scan on a column by column basis.
摘要翻译： 用于校正由固态X射线检测器中的场效应晶体管（FET）光电导效应引起的偏移的方法和装置包括在X射线检测器扫描的开始和结束处专用行。 专用行可用于测量由固态X射线检测器中的FET开关的光电导率引起的“信号”。 由于FET光电导致的信号随着时间的推移衰减，所以在检测器扫描的开始和结束时进行的测量可以用于通过插值来预测由扫描器扫描的每一行的光导感应偏移所贡献的信号量 逐列依据。
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5.发明授权Method and apparatus for improved data acquisition using a solid state digital X-ray detector 有权使用固态数字X射线检测器改进数据采集的方法和装置公开(公告)号：US07132667B2
公开(公告)日：2006-11-07
申请号：US10841010
申请日：2004-05-07
IPC分类号： G01T1/24
CPC分类号： H04N5/32 , H01L27/14658 , H04N5/3415
摘要： Certain embodiments provide a method and system for improved x-ray image data acquisition using a digital x-ray detector. The method and system include defining groups of scan lines in a detector, associating data lines in the detector with the groups of scan lines, and reading image data from the groups of scan lines using the associated data lines. The scan lines are connected with a plurality of pixels. A region of interest may be defined in the detector. The pixels obtain image data regarding the region of interest. The image data may be read from at least one scan line in each of the groups of scan lines using the associated data lines. Alternatively, the image data may be read from alternating groups of the scan lines using the associated data lines. Image data may also be binned from adjacent pixels read using a plurality of data lines.
摘要翻译： 某些实施例提供了一种使用数字X射线检测器改进X射线图像数据采集的方法和系统。 该方法和系统包括在检测器中定义扫描线组，将检测器中的数据线与扫描线组相关联，并使用相关联的数据线从扫描线组读取图像数据。 扫描线与多个像素连接。 感兴趣区域可以在检测器中定义。 像素获得关于感兴趣区域的图像数据。 可以使用相关联的数据线从每组扫描线中的至少一条扫描线读取图像数据。 或者，可以使用相关联的数据线从扫描线的交替组读取图像数据。 也可以使用多条数据线从相邻像素读取图像数据。
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公开(公告)号：US08804909B2
公开(公告)日：2014-08-12
申请号：US13340175
申请日：2011-12-29
CPC分类号： A61B6/4233 , A61B6/5258 , A61B6/54
摘要： A method for regulating the acquisition of an analog input signal from a digital X-ray panel is provided. The method includes opening a switch disposed between an integrator and the digital X-ray panel prior to an integrator event or upon detection of a fault in the digital X-ray panel to decouple the integrator from the digital X-ray panel, wherein the integrator is configured to integrate the analog input signal from the digital X-ray panel. Also, a system for data acquisition is provided. Further, a method for fault protection of the digital X-ray panel is provided.
摘要翻译： 提供了一种用于调节从数字X射线面板获取模拟输入信号的方法。 该方法包括在积分器事件之前打开设置在积分器和数字X射线面板之间的开关，或者在检测到数字X射线面板中的故障以使积分器与数字X射线面板分离时，其中积分器 被配置为集成来自数字X射线面板的模拟输入信号。 此外，还提供了一种用于数据采集的系统。 此外，提供了一种用于数字X射线面板的故障保护的方法。
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公开(公告)号：US08693747B2
公开(公告)日：2014-04-08
申请号：US13098275
申请日：2011-04-29
申请人： Ping Xue , Shijia Zhang , Fengchao Zhang , John Robert Lamberty , Richard Gordon Cronce , James Zhengshe Liu , Paul Richard Granfors , German Guillermo Vera
发明人： Ping Xue , Shijia Zhang , Fengchao Zhang , John Robert Lamberty , Richard Gordon Cronce , James Zhengshe Liu , Paul Richard Granfors , German Guillermo Vera
IPC分类号： G06K9/00 , H01L27/146
CPC分类号： A61B6/5205 , A61B6/4233 , A61B6/54
摘要： A method for controlling a X-ray radiography system includes acquiring data from a digital X-ray detector, characterizing electromagnetic interference based upon the acquired data, selecting an electromagnetic interference compensation algorithm based upon the characterized electromagnetic interference, acquiring X-ray imaging data via the digital X-ray detector based upon the selected electromagnetic interference compensation algorithm, and processing the X-ray imaging data to produce image data capable of reconstruction in a user viewable form.
摘要翻译： 一种用于控制X射线摄影系统的方法，包括从数字X射线检测器获取数据，基于获取的数据表征电磁干扰，基于特征化的电磁干扰选择电磁干扰补偿算法，通过 基于所选择的电磁干扰补偿算法的数字X射线检测器，以及处理X射线成像数据以产生能够以用户可视形式重建的图像数据。
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公开(公告)号：US20130170622A1
公开(公告)日：2013-07-04
申请号：US13340175
申请日：2011-12-29
IPC分类号： H05G1/54
CPC分类号： A61B6/4233 , A61B6/5258 , A61B6/54
摘要： A method for regulating the acquisition of an analog input signal from a digital X-ray panel is provided. The method includes opening a switch disposed between an integrator and the digital X-ray panel prior to an integrator event or upon detection of a fault in the digital X-ray panel to decouple the integrator from the digital X-ray panel, wherein the integrator is configured to integrate the analog input signal from the digital X-ray panel. Also, a system for data acquisition is provided. Further, a method for fault protection of the digital X-ray panel is provided.
摘要翻译： 提供了一种用于调节从数字X射线面板获取模拟输入信号的方法。 该方法包括在积分器事件之前打开设置在积分器和数字X射线面板之间的开关，或者在检测到数字X射线面板中的故障以使积分器与数字X射线面板分离时，其中积分器 被配置为集成来自数字X射线面板的模拟输入信号。 此外，还提供了一种用于数据采集的系统。 此外，提供了一种用于数字X射线面板的故障保护的方法。
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公开(公告)号：US08040270B2
公开(公告)日：2011-10-18
申请号：US12393762
申请日：2009-02-26
IPC分类号： H03M1/12
摘要： According to embodiments of the present technique, a system and a method for obtaining low-noise measurements for a wide range of analog signal strengths is provided. According to aspects of the present technique, a low-gain measurement of an input pixel charge is performed, wherein the input pixel charge is distributed to two feedback capacitors, which together provide a relatively low integrator gain. After the low-gain measurement, a high-gain measurement is performed, wherein one of the capacitors is remove from the feedback loop and the charge is redistributed to the remaining capacitor.
摘要翻译： 根据本技术的实施例，提供了一种用于获得宽范围的模拟信号强度的低噪声测量的系统和方法。 根据本技术的方面，执行输入像素电荷的低增益测量，其中输入像素电荷被分配到两个反馈电容器，这两个反馈电容器一起提供相对低的积分器增益。 在低增益测量之后，执行高增益测量，其中电容器中的一个从反馈回路中去除，并且电荷被再分配到剩余电容器。
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公开(公告)号：US08605862B2
公开(公告)日：2013-12-10
申请号：US12891016
申请日：2010-09-27
申请人： Paul Richard Granfors , John Robert Lamberty , Richard Gordon Cronce , Ping Xue , Marc Schaepkens , Aaron Judy Couture , Douglas Albagli
发明人： Paul Richard Granfors , John Robert Lamberty , Richard Gordon Cronce , Ping Xue , Marc Schaepkens , Aaron Judy Couture , Douglas Albagli
CPC分类号： H01L27/14658 , H01L27/14623 , H04N5/32 , H04N5/35563
摘要： In one embodiment, a digital X-ray detector is provided with a plurality of pixel regions. Each pixel region includes a first photodiode having a first area and a second photodiode having a second area equal to or smaller than the first area. The digital X-ray detector also includes a shielding structure that overlies the first and second photodiodes of each pixel region with the shielding structure shielding proportionally less of the first photodiode than of the second photodiode to provide the first photodiode with a first sensitivity and the second photodiode with a second sensitivity lower than the first sensitivity.
摘要翻译： 在一个实施例中，数字X射线检测器设置有多个像素区域。 每个像素区域包括具有第一区域的第一光电二极管和具有等于或小于第一区域的第二区域的第二光电二极管。 数字X射线检测器还包括覆盖每个像素区域的第一和第二光电二极管的屏蔽结构，屏蔽结构屏蔽第一光电二极管比第二光电二极管成比例地少，以提供第一光敏二极管的第一灵敏度，而第二光电二极管 光电二极管的灵敏度低于第一灵敏度。
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