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1. 发明授权

US07409564B2 Digital radiography detector with thermal and power management 有权
标题翻译：具有热和电源管理的数字放射线检测器
公开(公告)号：US07409564B2
公开(公告)日：2008-08-05
申请号：US10805753
申请日：2004-03-22
申请人： Ken S. Kump , John R. Lamberty , Aaron A. Haen , Paul R. Granfors , Jason R. Ertel , Jibril Odogba , David C. Neumann , Donald F Langler , Ping Xue , Habib Vafi , Scott W Petrick
发明人： Ken S. Kump , John R. Lamberty , Aaron A. Haen , Paul R. Granfors , Jason R. Ertel , Jibril Odogba , David C. Neumann , Donald F Langler , Ping Xue , Habib Vafi , Scott W Petrick
IPC分类号： G06F1/00 , G06F1/32 , H04N5/225
CPC分类号： G06F1/3203 , A61B6/548 , G01T1/17 , G06F1/206 , Y02D10/16
摘要： Systems and methods are provided for managing power consumption of a medical imaging detector by the use of triggering signals, environmental condition data, and/or determination of a variable time interval triggering event that is unique for each power consumption state. Systems and methods are provided for managing power and temperature of a device, after receiving a request for a function to be performed by the device determining an “on” trigger component, an “off” trigger component, associated circuits for performing the received function, providing power to the associated circuits upon the occurrence of the “on” trigger component, and removing power to the associated circuits upon the occurrence of the “off” trigger component. Further, an instruction is described for determining and displaying a variable time interval that is indicative of a time to change from one state to a desired state.
摘要翻译：提供了用于通过使用触发信号，环境条件数据和/或确定每个功耗状态唯一的可变时间间隔触发事件来管理医疗成像检测器的功耗的系统和方法。提供了用于管理设备的功率和温度的系统和方法，在接收到要由所述设备执行的功能的确定“接通”触发组件，“关闭”触发组件，用于执行接收功能的相关电路，在发生“接通”触发组件时向相关联的电路供电，以及在发生“关闭”触发组件时去掉相关电路的电力。此外，描述了用于确定和显示指示从一种状态改变到期望状态的时间的可变时间间隔的指令。

2. 发明授权

US07239685B2 System and method for reducing power consumption in digital radiography detectors 失效
标题翻译：用于降低数字放射线检测器功耗的系统和方法
公开(公告)号：US07239685B2
公开(公告)日：2007-07-03
申请号：US10805828
申请日：2004-03-22
申请人： Scott W. Petrick , Donald F Langler , Paul R. Granfors , Ken S. Kump , Aaron A. Haen , Jibril Odogba , Jason R. Ertel , David C. Neumann , John R. Lamberty , Ping Xue , Habib Vafi
发明人： Scott W. Petrick , Donald F Langler , Paul R. Granfors , Ken S. Kump , Aaron A. Haen , Jibril Odogba , Jason R. Ertel , David C. Neumann , John R. Lamberty , Ping Xue , Habib Vafi
IPC分类号： H05G1/58
CPC分类号： G01T1/2985
摘要： Systems and methods are provided for managing power consumption of a medical imaging detector by the use of triggering signals, environmental condition data, and/or determination of a variable time interval triggering event that is unique for each power consumption state. Systems and methods are provided for managing power and temperature of a device, after receiving a request for a function to be performed by the device determining an “on” trigger component, an “off” trigger component, associated circuits for performing the received function, providing power to the associated circuits upon the occurrence of the “on” trigger component, and removing power to the associated circuits upon the occurrence of the “off” trigger component. Further, an instruction is described for determining and displaying a variable time interval that is indicative of a time to change from one state to a desired state.
摘要翻译：提供了用于通过使用触发信号，环境条件数据和/或确定每个功耗状态唯一的可变时间间隔触发事件来管理医疗成像检测器的功耗的系统和方法。提供了用于管理设备的功率和温度的系统和方法，在接收到要由所述设备执行的功能的确定“接通”触发组件，“关闭”触发组件，用于执行接收功能的相关电路，在发生“接通”触发组件时向相关联的电路供电，以及在发生“关闭”触发组件时去掉相关电路的电力。此外，描述了用于确定和显示指示从一种状态改变到期望状态的时间的可变时间间隔的指令。

3. 发明授权

US5604347A Method and means for compensating for row variable offsets in a large area solid state x-ray detector 失效
标题翻译：用于补偿大面积固态X射线检测器中的行可变偏移的方法和装置
公开(公告)号：US5604347A
公开(公告)日：1997-02-18
申请号：US501800
申请日：1995-07-13
申请人： Scott W. Petrick , Lawrence R. Skrenes , Jean C. Morvan , Paul R. Granfors
发明人： Scott W. Petrick , Lawrence R. Skrenes , Jean C. Morvan , Paul R. Granfors
IPC分类号： G01T1/20 , A61B6/00 , H04N5/32 , H05G1/26 , H05G1/64 , H04N5/35
CPC分类号： H04N5/3658 , H04N5/32 , H05G1/26 , H05G1/64
摘要： Row variable offsets in a large area solid state x-ray detector are compensated for. Initially, a calibration is performed to determine the row variable offsets. The calibration is achieved by measuring the average offset of each row. During normal operation, this offset is compensated for in a converting circuit. The required signal range of the converting circuit is consequently reduced.
摘要翻译：在大面积固态X射线检测器中的行可变偏移被补偿。最初，执行校准以确定行变量偏移。校准通过测量每一行的平均偏移来实现。在正常操作期间，在转换电路中补偿该偏移。因此，转换电路的所需信号范围减小。

4. 发明授权

US5920070A Solid state area x-ray detector with adjustable bias 失效
标题翻译：具有可调偏置的固态区X射线检测器
公开(公告)号：US5920070A
公开(公告)日：1999-07-06
申请号：US758604
申请日：1996-11-27
申请人： Scott W. Petrick , Larry R. Skrenes , Paul R. Granfors , George E. Possin
发明人： Scott W. Petrick , Larry R. Skrenes , Paul R. Granfors , George E. Possin
IPC分类号： G01T1/20 , G01T1/24 , H01L27/14 , H01L31/09 , H04N5/325
CPC分类号： G01T1/24 , H04N5/325
摘要： A large area solid state x-ray detector employs a number of photodiodes that are charged electrically then discharged by exposure to x-ray. Ghost images resulting from release of charge trapped in photodiodes during prior exposures are eliminated by adjusting the biasing during a reset portion of the imaging cycle. Biasing may be increased to decrease the recharge time or reversed in polarity to evenly discharge the diodes or decreased to preserve the offset so that it may be removed from subsequent images by image processing.
摘要翻译：大面积的固态X射线检测器采用许多光电二极管，其电充电然后通过暴露于X射线放电。通过在成像周期的复位部分期间调整偏压来消除在先前曝光期间由于释放被俘获在光电二极管中的电荷而产生的鬼图像。可以增加偏置以减少再充电时间或极性反转以均匀地放电二极管或减小以保持偏移，使得其可以通过图像处理从后续图像中去除。

5. 发明授权

US5352884A Method and apparatus for providing offset for light detector 失效
标题翻译：用于提供光检测器偏移的方法和装置
公开(公告)号：US5352884A
公开(公告)日：1994-10-04
申请号：US48118
申请日：1993-04-14
申请人： Scott W. Petrick , Paul R. Granfors
发明人： Scott W. Petrick , Paul R. Granfors
IPC分类号： A61B6/03 , G01T1/20 , G01T1/24 , H01L27/146 , H04N5/32 , H04N5/359 , H04N5/365 , H05G1/60 , H01J40/14
CPC分类号： H04N5/359 , A61B6/032 , G01T1/2018 , H04N5/32 , H04N5/3651 , H05G1/60
摘要： The invention provides a solid state light imager or x-ray detector including an array of rows and columns of elements, each element including a photo diode, which converts photons to an electrical signal, and a transistor. Each photo diode has a capacitance associated with it. The cathode of the photo diode in each element is connected to the source of the transistor in the element. The amount of charge removed from each photo diode, after exposure to light, is used to create an image. The imager is capable of accurate measurement of charge removed from the photo diodes after the array has been exposed to light, using unipolar measuring circuitry, in spite of charge retention by the transistors and a problem caused by the combination of changes in row voltage and parasitic row to column capacitance.
摘要翻译：本发明提供了一种固态光成像仪或X射线检测器，其包括行和列的元件阵列，每个元件包括将光子转换成电信号的光电二极管和晶体管。每个光电二极管都具有与之相关的电容。每个元件中的光电二极管的阴极连接到元件中的晶体管的源极。使用从曝光后的每个光电二极管去除的电荷量来产生图像。在使用单极性测量电路的阵列已经暴露于光线之后，成像器能够精确地测量从光电二极管去除的电荷，尽管晶体管存在电荷保持，并且由行电压和寄生电阻的变化组合引起的问题行到列电容。

6. 发明授权

US07408168B1 Systems, methods and apparatus for adaptive cancellation of induced row noise in X-ray detector 有权
标题翻译：用于X射线探测器中感应行噪声自适应消除的系统，方法和装置
公开(公告)号：US07408168B1
公开(公告)日：2008-08-05
申请号：US11738440
申请日：2007-04-20
申请人： Richard Aufrichtig , John R Lamberty , Paul R. Granfors , Richard Cronce
发明人： Richard Aufrichtig , John R Lamberty , Paul R. Granfors , Richard Cronce
IPC分类号： G01T25/00
CPC分类号： G01T1/29
摘要： Systems, methods and apparatus are provided through which in some embodiments the line time of an X-Ray detector is dynamically selected so as to nullify an aliased interference signal. The frequency of a noise signal generated by a source external to the digital X-ray detector is determined and, based on the determined frequency, the line time of the digital X-ray is adjusted so as to compensate for the interfering noise. The frequency of the noise can be directly determined from an electromagnetic interference (EMI) sensor or derived through analysis of the power spectrum of the noise signal.
摘要翻译：提供了系统，方法和装置，在一些实施例中，动态地选择X射线检测器的线路时间，以便消除混叠的干扰信号。确定由数字X射线检测器外部的源产生的噪声信号的频率，并且基于确定的频率来调整数字X射线的行时间以补偿干扰噪声。噪声的频率可以直接由电磁干扰（EMI）传感器确定，或通过分析噪声信号的功率谱得出。

7. 发明授权

US06353654B1 Method and apparatus for compensating for image retention in an amorphous silicon imaging detector 有权
标题翻译：用于补偿非晶硅成像检测器中的图像保持的方法和装置
公开(公告)号：US06353654B1
公开(公告)日：2002-03-05
申请号：US09475874
申请日：1999-12-30
申请人： Paul R. Granfors , Sussan Pourjavid
发明人： Paul R. Granfors , Sussan Pourjavid
IPC分类号： G01N2304
CPC分类号： G01T1/2928
摘要： A technique for compensating for a retained image includes sampling image data from a digital detector following termination of a first exposure to model decay of the retained image. Based upon the modeled decay, further decay of the retained image is predicted. The predicted decay values are employed to correct or compensate for the decaying retained image in a subsequent exposure. The technique is particularly well suited to compensation of retained images in fluoroscopic exposures following radiographic exposures in a digital x-ray system.
摘要翻译：用于补偿保留图像的技术包括在第一曝光到保留图像的模型衰减之后从数字检测器采样图像数据。基于模型衰减，预测了保留图像的进一步衰减。采用预测衰减值来校正或补偿后续曝光中的衰减保留图像。该技术特别适用于在数字X射线系统中的放射照相曝光之后补偿荧光透视曝光中的保留图像。

8. 发明授权

US06623161B2 Method and apparatus for identifying and correcting line artifacts in a solid state X-ray detector 有权
标题翻译：用于识别和校正固态X射线检测器中的线假象的方法和装置
公开(公告)号：US06623161B2
公开(公告)日：2003-09-23
申请号：US09682386
申请日：2001-08-28
申请人： Richard Aufrichtig , Paul R. Granfors , Douglas Albagli , George E. Possin , John M. Boudry
发明人： Richard Aufrichtig , Paul R. Granfors , Douglas Albagli , George E. Possin , John M. Boudry
IPC分类号： G01D1800
CPC分类号： G01N23/04 , A61B6/5258
摘要： A method is provided for identifying detector elements in a solid state X-ray detector susceptible to causing line artifacts due to faulty detector elements that leak charge. A portion of the X-ray detector is covered by a radiation occluding material and the detector is exposed to a level of radiation sufficient to reach a predetermined threshold in the exposed portion of the detector. An image representative of the radiation is acquired and further analyzed to determine whether line artifacts exist. Data lines found to exhibit line artifacts are stored in the image processor.
摘要翻译：提供了一种用于识别固体X射线检测器中的检测器元件的方法，其易于由于泄漏电荷的检测器元件故障而导致线路伪影。 X射线检测器的一部分由辐射阻塞材料覆盖，并且检测器暴露于足以在检测器的暴露部分中达到预定阈值的辐射水平。获取代表辐射的图像并进一步分析以确定是否存在线条伪影。被发现呈现线条伪影的数据线被存储在图像处理器中。

9. 发明授权

US4764679A Kinestatic charge detector 失效
标题翻译：金属电荷检测器
公开(公告)号：US4764679A
公开(公告)日：1988-08-16
申请号：US895725
申请日：1986-08-12
申请人： David L. McDaniel , Paul R. Granfors , David M. Hoffman
发明人： David L. McDaniel , Paul R. Granfors , David M. Hoffman
IPC分类号： A61B6/00 , G01T1/185 , H01J47/02 , H01J47/00
CPC分类号： H01J47/02
摘要： Quantum detection efficiency and spatial resolution in a kinestatic charge detector are improved by utilization of an x-ray transmissive device positioned within a collection volume of a kinestatic charge detector x-ray detection chamber for displacing the charge carrier generating medium within predetermined areas of the chamber. Within the chamber, quantum detection efficiency and spatial resolution are affected by distortion in electric field lines existing between a high voltage anode and a relatively low voltage collector electrode. The distorted field lines cause charge carriers generated in the medium by impinging radiation to impact on either the walls of the chamber or to follow non-linear paths between the point of creation and the collection electrode. By displacing the medium in the chamber in areas having the greatest electric field distortion, the quantum detection efficiency and spatial resolution are improved. In one embodiment an x-ray transmissive device is placed in the chamber adjacent an x-ray emitting window and has a portion extending partially into the space between the anode and collector electrode. In another embodiment, an additional device is positioned in the chamber adjacent a rear wall thereof for displacing the medium in the rear portion of the chamber.
摘要翻译：通过利用位于感性电荷检测器x射线检测室的收集体积内的x射线透射装置来改善活性电荷检测器中的量子检测效率和空间分辨率，用于将电荷载体产生介质置于腔室的预定区域内。在室内，量子检测效率和空间分辨率受到存在于高压阳极和相对低压集电极之间的电场线的失真的影响。畸变的场线引起在介质中产生的电荷载体，通过冲击辐射来冲击室的壁或者沿着创建点和收集电极之间的非线性路径。通过在具有最大电场失真的区域中移动腔室中的介质，提高了量子检测效率和空间分辨率。在一个实施例中，x射线透射装置被放置在邻近X射线发射窗口的腔室中，并且具有部分地延伸到阳极和集电极之间的空间的部分。在另一个实施例中，附加装置邻近其后壁定位在腔室中，用于移动腔室后部的介质。

10. 发明授权

US06721441B1 Extended dynamic range system for digital X-ray imaging detectors 失效
标题翻译：数字X射线成像探测器的扩展动态范围系统
公开(公告)号：US06721441B1
公开(公告)日：2004-04-13
申请号：US09475872
申请日：1999-12-30
申请人： Paul R. Granfors
发明人： Paul R. Granfors
IPC分类号： G06K900
CPC分类号： G06T5/004 , G06T5/20
摘要： A technique for adjusting the dynamic range in an imaging system includes balancing of pure gray level processing with pure frequency processing to reduce the brightness of light regions in an image and to maintain contrast in darker regions. The technique applies unsharp masking in which a set of parameter values are used based upon smoothed pixel values for an image. The unsharp masking parameters may be substantially zero below a threshold, and increase nonlinearly above the threshold. A set of brightness control parameters are then used to adjust an output value for each pixel to a desired dynamic range. The brightness control parameters may also be nonlinear.
摘要翻译：用于调整成像系统中的动态范围的技术包括：纯净灰度级处理与纯频率处理的平衡，以减少图像中的光区域的亮度并且保持较暗区域中的对比度。该技术应用反常遮蔽，其中基于平滑的图像的像素值使用一组参数值。不清晰的掩蔽参数可以在阈值以下基本上为零，并且非线性地高于阈值。然后使用一组亮度控制参数来将每个像素的输出值调整到期望的动态范围。亮度控制参数也可以是非线性的。

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