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    • 2. 发明授权
    • Digitally aided microfluoroscopy and fluorospot system and method of
using the same
    • 数字辅助显微镜和荧光体系及其使用方法
    • US5394455A
    • 1995-02-28
    • US56266
    • 1993-04-30
    • Werner W. RoeckOrhan NalciogluJohn T. Martin
    • Werner W. RoeckOrhan NalciogluJohn T. Martin
    • H04N5/32H05G1/60H05G1/64
    • A61B6/464H04N5/32H05G1/60
    • An improvement is made in a high resolution clinical fluoroscopic system by utilizing a beam splitter for selectively directing a fluoroscopic image of an X-ray pattern transmitted through a patient to either a low resolution or high resolution television channel. The low resolution channel operates a low magnification level to provide a macroscopic view of an object of interest in order to orient the patient and object of interest within the center of view. Thereafter, the beam splitter is activated to redirect the fluoroscopic image to a zoom lens which magnifies the image. The magnified image is then scanned by a sensitive CCD-type camera to alternatively produce through the video processor a magnified view of the object of interest at variable magnification having submillimeter resolution. Collimation of the X-ray beam is coordinated with the degree of magnification through the zoom lens to provide for contrast resolution without any substantial increase of the X-ray exposure levels.
    • 在高分辨率临床荧光镜系统中通过利用分束器来选择性地将透过患者的X射线图案的透视图像引导到低分辨率或高分辨率电视频道来进行改进。 低分辨率通道操作低放大率水平以提供感兴趣对象的宏观视图,以便将感兴趣的患者和对象定向在视野中。 此后,分束器被激活以将透视图像重定向到放大图像的变焦透镜。 然后,通过敏感的CCD型摄像机对放大的图像进行扫描,以便通过视频处理器产生具有亚毫米分辨率的可变放大倍数的感兴趣对象的放大视图。 X射线束的准直与通过变焦镜头的放大程度协调,以提供对比度分辨率,而不会显着提高X射线曝光水平。