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    PORTABLE DUAL-MODE DIGITAL X-RAY DETECTOR AND METHODS OF OPERATION OF SAME
    4.
    发明申请
    PORTABLE DUAL-MODE DIGITAL X-RAY DETECTOR AND METHODS OF OPERATION OF SAME 审中-公开
    便携式双模数字X射线探测器及其操作方法

    公开(公告)号：US20090129547A1

    公开(公告)日：2009-05-21

    申请号：US11941397

    申请日：2007-11-16

    申请人： Kadri Nizar Jabri ,  Ferry Tamtoro ,  Rajeev Ramankutty Marar ,  Rowland Frederick Saunders

    发明人： Kadri Nizar Jabri ,  Ferry Tamtoro ,  Rajeev Ramankutty Marar ,  Rowland Frederick Saunders

    IPC分类号： H05G1/58

    CPC分类号： G01T1/2018

    摘要： A portable dual-mode digital X-ray detector configured to operate in an integrated mode for use in direct digital radiography (DDR) and in non-integrated mode for use in computed radiography (CR). The portable dual-mode X-ray detector comprising a switching mechanism for switching the detector between an integrated mode and a non-integrated mode, a triggering mechanism for use in the non-integrated mode, a communications interface for use in the integrated mode, and at least one memory module for storing image data. The disclosure further includes the methods of operation of the portable dual-mode digital X-ray detector in the integrated mode for use in direct digital radiography (DDR) and in the non-integrated mode for use in computed radiography (CR).

    摘要翻译： 便携式双模数字X射线检测器被配置为以集成模式操作，用于直接数字射线照相术（DDR）和用于计算机X射线照相术（CR）的非集成模式。 该便携式双模X射线检测器包括用于在集成模式和非集成模式之间切换检测器的切换机构，用于非集成模式的触发机构，用于集成模式的通信接口， 以及用于存储图像数据的至少一个存储模块。 本公开还包括在用于直接数字射线照相（DDR）和用于计算机X射线照相术（CR）的非集成模式中的集成模式下的便携式双模数字X射线检测器的操作方法。

    Alignment systems and methods for radiographic imaging systems
    6.
    发明授权
    Alignment systems and methods for radiographic imaging systems 失效
    放射成像系统的对准系统和方法

    公开(公告)号：US07056020B2

    公开(公告)日：2006-06-06

    申请号：US10755074

    申请日：2004-01-09

    申请人： Rowland Frederick Saunders ,  Kadri Nizar Jabri

    发明人： Rowland Frederick Saunders ,  Kadri Nizar Jabri

    IPC分类号： G01D18/00

    CPC分类号： A61B6/583

    摘要： Phantoms and discrete spatial and frequency methods for quantitatively measuring the alignment of radiographic imaging systems are described. One embodiment comprises phantoms for use in mechanically aligning radiographic imaging systems. These phantoms comprise: a radio-opaque material capable of holding a well-defined edge that allows quantitative image resolution measurements to be obtained thereof; wherein once the quantitative image resolution measurements are obtained, the spatial frequency response of the radiographic imaging system at a given focal plane can be calculated therefrom, thereby defining the mechanical alignment, resolution, and resolution uniformity of the radiographic imaging system. Systems and methods for mechanically aligning radiographic imaging systems, and methods for obtaining a quantitative measurement of the mechanical alignment, resolution and resolution uniformity of radiographic imaging systems, are also disclosed.

    摘要翻译： 描述了用于定量测量放射成像系统的对准的幽灵和离散的空间和频率方法。 一个实施例包括用于机械对准射线照相成像系统的幻影。 这些幻影包括：能够保持能够获得定量图像分辨率测量的良好限定边缘的不透射线材料; 其中一旦获得了定量图像分辨率测量值，就可以计算出放射线照相成像系统在给定焦平面处的空间频率响应，从而定义射线照相成像系统的机械对准，分辨率和分辨率均匀性。 还公开了用于机械对准放射线照相成像系统的系统和方法，以及用于获得射线照相成像系统的机械对准，分辨率和分辨率均匀性的定量测量的方法。

    Methods and apparatus for providing signal dependent offset and gain adjustments for a solid state X-ray detector
    7.
    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

    CPC分类号： H04N5/361 ,  A61B6/583 ,  H04N5/235 ,  H04N5/32

    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。

    Image guided acquisition of quantitative dual energy data
    9.
    发明授权
    Image guided acquisition of quantitative dual energy data 有权
    图像引导采集定量双能量数据

    公开(公告)号：US07724875B2

    公开(公告)日：2010-05-25

    申请号：US11875427

    申请日：2007-10-19

    申请人： Kadri Nazar Jabri ,  Rowland Frederick Saunders ,  John Michael Sabol ,  Gopal Biligeri Avinash

    发明人： Kadri Nazar Jabri ,  Rowland Frederick Saunders ,  John Michael Sabol ,  Gopal Biligeri Avinash

    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。

    SYSTEM AND METHOD OF LOW DOSE EXPOSURE AIDED POSITIONING (LEAP) FOR DIGITAL RADIOGRAPHY
    10.
    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

    申请人： Ryan James Lemminger ,  Rowland Frederick Saunders

    发明人： Ryan James Lemminger ,  Rowland Frederick Saunders

    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。