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    X-ray photographic apparatus
    2.
    发明公开
    X-ray photographic apparatus 失效
    X射线装置。

    公开(公告)号：EP0187427A1

    公开(公告)日：1986-07-16

    申请号：EP85300070.1

    申请日：1985-01-04

    申请人： Mukai, Yoshibumi

    发明人： Haneda, Takuya ,  Mukai, Yoshibumi

    IPC分类号： H05G1/60 ,  H04N5/32 ,  H04N1/00 ,  G03B42/02

    CPC分类号： H04N1/127 ,  H04N1/12 ,  H04N1/19594 ,  H04N1/32358 ,  H04N1/4092 ,  H04N5/32 ,  H04N2201/0079 ,  H04N2201/3287 ,  H05G1/60

    摘要： An x-ray photographic apparatus comprises an x-ray generator (13) for transmitting x-ray radiation through an object or patient under examination. The x-ray image obtained thereby is photographed by a television camera (14,15). The output from the camera is then converted into digital form by an analog-to-digital converter (16). The resulting digital data are successively stored in a memory (17) having a storage capacity just large enough to store data relating to one image frame. The data stored in the memory are read out by first readout means (10,18) and are then converted into analog form by a first digital-to-analog converter (27). A television monitor (28), which operates in synchronism with the reading out of data from the memory, is supplied with the output from the first D/A converter so that the monitor displays the image. A register (30) stores an amount of the output read from the memory which corresponds to one image line. Data are repeatedly read from this register by second readout means (9,21-1 to 21-n,24) and are converted into analog form by a second digital-to-analog converter (32). Data relating to one image line are then fed to a cathode ray tube (35), which applies a scanning light signal to photosensitive paper (37) to print the image line thereon. As each line of the image is printed on the paper, the paper is shifted in stepwise fashion by a stepping motor (42) so that a complete printed image is formed, corresponding to a selected one of the images produced by the transmission of x-ray radiation through the object or patient.