公开(公告)号：US07852985B2

公开(公告)日：2010-12-14

申请号：US12403551

申请日：2009-03-13

申请人： James Zhengshe Liu ,  Donald Langler ,  Gary V. McBroom

发明人： James Zhengshe Liu ,  Donald Langler ,  Gary V. McBroom

IPC分类号： H05G1/64

CPC分类号： G01T1/175 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/4464 ,  A61B6/548 ,  A61B6/56 ,  A61B6/566 ,  G03B42/02 ,  G03B42/04 ,  G06F11/1441

摘要： A digital detector of a digital imaging system is provided. In one embodiment, a digital detector includes a detector array disposed in a housing and configured to generate image data based on received radiation. The digital detector may also include a battery configured to be disposed within a receptacle of the housing and to supply operating power to the detector array. In one embodiment, the receptacle and the housing may be configured such that the receptacle is externally accessible to enable a user to selectively insert and remove the battery from the receptacle. Additional systems, methods, and devices are also disclosed.

摘要翻译： 提供数字成像系统的数字检测器。 在一个实施例中，数字检测器包括设置在壳体中并被配置为基于接收的辐射生成图像数据的检测器阵列。 数字检测器还可以包括被配置为设置在壳体的插座内并且向检测器阵列提供工作电力的电池。 在一个实施例中，插座和壳体可以被配置成使得插座可外部访问，以使用户能够从插座中选择性地插入和移除电池。 还公开了附加的系统，方法和装置。

公开(公告)号：US20100183124A1

公开(公告)日：2010-07-22

申请号：US12356488

申请日：2009-01-20

申请人： James Zhengshe Liu ,  John Lamberty ,  Ping Xue ,  Donald Langler

发明人： James Zhengshe Liu ,  John Lamberty ,  Ping Xue ,  Donald Langler

IPC分类号： G01D18/00

CPC分类号： H04N5/3651 ,  A61B6/585 ,  H04N5/32 ,  H04N5/3655

摘要： A gain correction and calibration technique for digital imaging systems is provided. In one embodiment, a method may include acquiring a plurality of dark images via a digital detector of an X-ray system. Acquiring the plurality of dark images may include acquiring data from a plurality of data channels of the digital detector during an analog test mode of the digital detector in which calibration voltages are applied to the data channels. The method may also include calibrating a channel gain map of the detector based on the plurality of dark images. Additional systems, methods, and devices are also disclosed.

摘要翻译： 提供了数字成像系统的增益校正和校准技术。 在一个实施例中，一种方法可以包括通过X射线系统的数字检测器获取多个暗图像。 获取多个暗图像可以包括在其中将校准电压施加到数据通道的数字检测器的模拟测试模式期间从数字检测器的多个数据通道获取数据。 该方法还可以包括基于多个暗图像来校准检测器的通道增益图。 还公开了附加的系统，方法和装置。

公开(公告)号：US08942444B2

公开(公告)日：2015-01-27

申请号：US13588760

申请日：2012-08-17

申请人： James Zhengshe Liu ,  Richard Larry Anderton ,  Brian James Grekowicz ,  Bela Janos Kiraly

发明人： James Zhengshe Liu ,  Richard Larry Anderton ,  Brian James Grekowicz ,  Bela Janos Kiraly

IPC分类号： G06K9/00

CPC分类号： G01T1/17 ,  A61B6/4405 ,  A61B6/563 ,  H04N5/32 ,  H04N5/378

摘要： An imaging system includes an analog-to-digital converter configured to convert an analog pixel value into a first digital pixel value. The imaging system also includes an index value source configured to receive the first digital pixel value from the analog-to-digital converter and to generate a digital index value based on a comparison of the first digital pixel value to a digital reference value. In addition, the imaging system includes a transmitter in communication with the index value source and configured to transmit the digital index value. Further, the imaging system includes an image processing component configured to receive the digital index value and to generate a second digital pixel value based at least in part on the received digital index value and a lookup table of the image processing component.

摘要翻译： 成像系统包括被配置为将模拟像素值转换为第一数字像素值的模数转换器。 成像系统还包括被配置为从模数转换器接收第一数字像素值并且基于第一数字像素值与数字参考值的比较来生成数字索引值的索引值源。 此外，成像系统包括与索引值源通信并被配置为发送数字索引值的发射器。 此外，成像系统包括图像处理部件，被配置为至少部分地基于所接收的数字索引值和图像处理部件的查找表来接收数字索引值并生成第二数字像素值。

公开(公告)号：US08861678B2

公开(公告)日：2014-10-14

申请号：US13469655

申请日：2012-05-11

申请人： James Zhengshe Liu ,  Scott William Petrick ,  Luke Gerard Beno

发明人： James Zhengshe Liu ,  Scott William Petrick ,  Luke Gerard Beno

IPC分类号： H05G1/08

CPC分类号： H05G1/08

摘要： A system for eliminating image artifacts caused by electromagnetic interference (EMI) on a portable digital x-ray detector that is capable of non-contact wireless inductively coupled power transfer and capacitively coupled communication and data transfer. An X-ray imaging system comprising a portable digital X-ray detector inductively and capacitively coupled to a power source and communication device that is coupled to a detector receptacle of the X-ray imaging system when the portable digital X-ray detector is located within the detector receptacle to transfer power from a power supply of the power source and communication device to the portable digital X-ray detector and transfer communication and data between the power source and communication device and the portable digital X-ray detector.

摘要翻译： 一种用于消除由便携式数字X射线检测器引起的电磁干扰（EMI）的图像伪像的系统，其能够进行非接触式无线电感耦合功率传输和电容耦合通信和数据传输。 一种X射线成像系统，包括便携式数字X射线检测器，感应和电容耦合到电源和通信设备，当便携式数字X射线检测器位于内部时，该通信设备耦合到X射线成像系统的检测器插座 检测器插座，用于将电源和通信设备的电源传送到便携式数字X射线检测器，并传送电源和通信设备与便携式数字X射线检测器之间的通信和数据。

公开(公告)号：US08781075B2

公开(公告)日：2014-07-15

申请号：US12986943

申请日：2011-01-07

申请人： James Zhengshe Liu ,  Kenneth Kump ,  Gireesha Rao ,  Chuande Liu ,  Craig Dennis

发明人： James Zhengshe Liu ,  Kenneth Kump ,  Gireesha Rao ,  Chuande Liu ,  Craig Dennis

IPC分类号： H05G1/56 ,  H05G1/58 ,  H05G1/64

CPC分类号： A61B6/4411 ,  A61B6/4405 ,  A61B6/548 ,  A61B6/56

摘要： The present disclosure is directed towards a method of changing wireless communication channels in a connected host and client system. For example, in one embodiment, the link quality of a connection is monitored by the host or the client. If the connection has a link quality below a predetermined threshold but remains intact, a channel switch request is sent, synchronization packages are exchanged between the host and client on the current channel, the channel of the system is changed to a new channel, and the system resumes communications on the new channel.

摘要翻译： 本公开涉及一种在连接的主机和客户端系统中改变无线通信信道的方法。 例如，在一个实施例中，由主机或客户端监视连接的链路质量。 如果连接的链路质量低于预定阈值但保持不变，则发送信道切换请求，在当前信道上的主机和客户端之间交换同步包，系统的信道被改变为新的信道，并且 系统在新频道上恢复通信。

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。

公开(公告)号：US20140044232A1

公开(公告)日：2014-02-13

申请号：US13568912

申请日：2012-08-07

申请人： James Zhengshe Liu

发明人： James Zhengshe Liu

IPC分类号： G06K9/38 ,  G01N23/04

CPC分类号： H04N5/32 ,  G01N23/04

摘要： A computer-implemented method for gain calibration is provided. The method includes sorting the calibration data of each pixel location from the offset-corrected X-ray image data into a sequence. The method also includes removing part of the calibration data from one end or both ends of the respective sequence for each pixel location. The method further includes averaging the calibration data remaining within each respective sequence to obtain an average pixel value for each pixel location. The method yet further includes generating a gain map based on the average pixel value for each pixel location.

摘要翻译： 提供了一种计算机实现的增益校准方法。 该方法包括将每个像素位置的校准数据从偏移校正的X射线图像数据分类为序列。 该方法还包括从每个像素位置的相应序列的一端或两端去除部分校准数据。 该方法还包括平均每个相应序列中剩余的校准数据，以获得每个像素位置的平均像素值。 该方法还包括基于每个像素位置的平均像素值生成增益图。

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

IPC分类号： H01J31/49 ,  A61B6/08

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。

公开(公告)号：US20100111263A1

公开(公告)日：2010-05-06

申请号：US12261777

申请日：2008-10-30

申请人： John Lamberty ,  Beilei Wang ,  James Zhengshe Liu

发明人： John Lamberty ,  Beilei Wang ,  James Zhengshe Liu

IPC分类号： H01J31/50 ,  H01J5/02

CPC分类号： G01T1/00 ,  A61B6/4283 ,  A61B6/563

摘要： Systems, methods and apparatus are provided through which in some implementations a portable digital X-ray detector includes a modular handle that is removeable from a housing of the detector, the modular handle includes component(s) that perform functions that are specific to a number of portable digital X-ray detectors, such as data communication with external devices and/or power conditioning, and the housing of the detector includes the pixel array and component(s) that perform functions that are common to the pixel array. In some implementations, the modular handle includes an interface to the housing to support data communications and/or power supply with the component(s) in the housing and the housing also includes an interface that operably couples to the modular handle.

摘要翻译： 提供了系统，方法和装置，在一些实施方式中，便携式数字X射线检测器包括可从检测器的壳体移除的模块化手柄，模块化手柄包括执行特定于数字的功能的部件 的便携式数字X射线检测器，例如与外部设备的数据通信和/或功率调节，并且检测器的外壳包括执行像素阵列共有的功能的像素阵列和组件。 在一些实施方式中，模块化手柄包括到壳体的接口，以支持与壳体中的部件的数据通信和/或电力供应，并且壳体还包括可操作地耦合到模块化手柄的接口。

公开(公告)号：US07488947B1

公开(公告)日：2009-02-10

申请号：US11835534

申请日：2007-08-08

申请人： Scott William Petrick ,  James Zhengshe Liu ,  Frank Gao

发明人： Scott William Petrick ,  James Zhengshe Liu ,  Frank Gao

IPC分类号： G01T1/24

CPC分类号： G01T1/2018 ,  G01T7/005

摘要： Systems, methods and apparatus are provided through which in some embodiments field-effect-transistor (FET) leakage is estimated recursively from a pixel value obtained when the FET is off. The corrected pixel value is then obtained by subtracting the FET leakage estimate from the pixel value read when the FET is on. A weighing factor is introduced for the FET leakage estimation to achieve the balance between image noise and correction resolution.

摘要翻译： 提供了系统，方法和装置，在一些实施例中，从FET关闭时获得的像素值递归地估计场效应晶体管（FET）泄漏。 然后通过从FET接通时读取的像素值减去FET泄漏估计值来获得校正的像素值。 引入了用于FET泄漏估计的称重系数，以实现图像噪声和校正分辨率之间的平衡。