Imaging of pixel defects in digital detectors
    1.
    发明授权
    Imaging of pixel defects in digital detectors 失效
    数字检测器中像素缺陷的成像

    公开(公告)号:US06661456B1

    公开(公告)日:2003-12-09

    申请号:US09303190

    申请日:1999-04-30

    IPC分类号: H04N964

    摘要: A method and apparatus for displaying an image generated by at least one detector of an imaging unit are disclosed herein. The method includes creating a pixel map identifying locations of bad pixels in an array of pixels in the image detected by the at least one detector, linking the pixel map to the image, and providing for selective display of the pixel map. Bad pixels behave from a group including pixels which do not respond electrically and pixels which are statistically different from surrounding pixels in the array of pixels. The apparatus includes an imaging unit for generating x-rays which pass through a body of interest, at least one detector unit for detecting the x-rays, and a processing unit for identifying bad pixels within the detected image.

    摘要翻译: 本文公开了一种用于显示由成像单元的至少一个检测器产生的图像的方法和装置。 该方法包括:创建标识由至少一个检测器检测到的图像中的像素阵列中的不良像素的位置的像素图,将像素图连接到图像,以及提供像素图的选择性显示。 坏像素的行为包括不反应电路的像素和与像素阵列中的周围像素有统计学差异的像素。 该装置包括用于产生通过感兴趣的身体的X射线的成像单元,用于检测x射线的至少一个检测器单元,以及用于识别检测到的图像内的不良像素的处理单元。

    Method and system of aligning x-ray detector for data acquisition
    3.
    发明授权
    Method and system of aligning x-ray detector for data acquisition 有权
    X射线探测器对准数据采集的方法和系统

    公开(公告)号:US07581885B2

    公开(公告)日:2009-09-01

    申请号:US10904728

    申请日:2004-11-24

    IPC分类号: A61B6/08 H05G1/00

    摘要: A method and system of aligning an x-ray detector and x-ray tube for data acquisition are presented. The x-ray detector and x-ray tube are equipped with transmitters and receivers designed to provide feedback relating to the orientation, spacing, and general position thereof. In this regard, a user can effectively and efficiently position the x-ray tube and x-ray detector relative to one another for data acquisition.

    摘要翻译: 提出了一种对准X射线探测器和X射线管进行数据采集的方法和系统。 X射线检测器和X射线管配备有发射器和接收器,设计用于提供与其取向,间隔和一般位置有关的反馈。 在这方面,用户可以有效地并且有效地将X射线管和X射线检测器相对于彼此定位以用于数据采集。

    Method for dynamic range management of digital radiographic images
    4.
    发明授权
    Method for dynamic range management of digital radiographic images 失效
    数字放射照相图像动态范围管理方法

    公开(公告)号:US06408046B2

    公开(公告)日:2002-06-18

    申请号:US09751041

    申请日:2000-12-29

    IPC分类号: G01N2304

    摘要: In an X-ray imaging system comprising an X-ray source, a digital X-ray detector and a display device, an arrangement is provided for setting or establishing the dynamic range of the image at the display device. The detector is operated to provide a set of count values representing X-ray image data acquired by the detector from an object of imaging, and a set of standardized values, such as optical density values, is derived from the count values. The optical density values collectively define a range of optical density values, and the dynamic range of the display device is mapped thereto. The display device is enabled to present an image of the object which appears similar to or substantially the same as an image of the object presented by, for example, a specified analog X-ray film.

    摘要翻译: 在包括X射线源,数字X射线检测器和显示装置的X射线成像系统中,提供了用于在显示装置处设置或建立图像的动态范围的布置。 操作检测器以提供一组计数值,表示由检测器从成像对象获取的X射线图像数据,并从计数值导出一组标准化值,例如光密度值。 光密度值共同地限定了光密度值的范围,并且将显示装置的动态范围映射到其上。 显示装置能够呈现与由例如指定的模拟X射线胶片呈现的对象的图像相似或基本相同的对象的图像。

    System and method for reducing power consumption in digital radiography detectors
    5.
    发明授权
    System and method for reducing power consumption in digital radiography detectors 失效
    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

    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。