Automatic exposure and brightness control for fluoroscopic and
radio-graphic imaging
    1.
    发明授权
    Automatic exposure and brightness control for fluoroscopic and radio-graphic imaging 失效
    荧光镜和无线电图像成像的自动曝光和亮度控制

    公开(公告)号:US6047042A

    公开(公告)日:2000-04-04

    申请号:US47535

    申请日:1998-03-25

    IPC分类号: G01N23/04 H05G1/44

    CPC分类号: H05G1/44 G01N23/04

    摘要: An exposure control system for radiographic, fluoroscopic, or other diagnostic imaging includes an exposure sensor array and a control element. The exposure sensor array has a plurality of sensor elements directed to defined locations uniformly distributed over the imaging field and may make direct or indirect measurements of exposure rate or imaging converter brightness. A structure or region of diagnostic interest to examining personnel is identified, and only sensors which correspond to locations within the area of interest are selected for use in exposure control. Predefined examination parameters suitable for particular anatomical patient regions are stored. Upon request by examining personnel to perform an examination of an anatomical patient region, the parameters are retrieved for use. The parameters include a preselection of sensors typically suitable for examinations of such region. The sensor locations, and their selection status, may be displayed as an overlay on an actual diagnostic image so that examining personnel may determine which sensors correspond to a structure or region of diagnostic interest. Examining personnel may manually select or deselect sensors. During an automatic mode examination, sensor outputs are analyzed and sensors providing apparently spurious outputs are deselected.

    摘要翻译: 用于放射照相,荧光镜或其它诊断成像的曝光控制系统包括曝光传感器阵列和控制元件。 曝光传感器阵列具有指向均匀分布在成像场上的限定位置的多个传感器元件,并且可以进行曝光率或成像转换器亮度的直接或间接测量。 识别检查人员的诊断感兴趣的结构或区域,并且仅选择对应于感兴趣区域内的位置的传感器用于曝光控制。 存储适合于特定解剖患者区域的预定义检查参数。 根据要求,通过检查人员对解剖患者区域进行检查,检索参数以供使用。 这些参数包括通常适合于这种区域检查的传感器的预选。 传感器位置及其选择状态可以被显示为实际诊断图像上的覆盖物,使得检查人员可以确定哪些传感器对应于诊断感兴趣的结构或区域。 检查人员可以手动选择或取消选择传感器。 在自动模式检查期间,分析传感器输出,并取消选择提供明显虚假输出的传感器。