| 摘要 |
PURPOSE:To move a photographing position of a formed image in relation to the photographing position of a contrast image with respect to the photographing position of a mask image, by putting whole photographing area on coordinates for each photographing position when photographing before imaging, and by recording an image informtion after imaging in correspondence with to the coordinates. CONSTITUTION:When photographing before injecting a imaging agent, if a mask image taking- in signal 8 is inputted, horizontal and vertical direction moving devices 4 and 5 are driven with a specified cycle to move photographing devices 1 and 3 over whole movement area. The coordinates of each position is outputted from individual horizontal and vertical coordinates detection circuits 6 and 7. On the other hand, one image plane of a photographing at each position is put on coordinates by individual horizontal and vertical coordinates counter circuits 14 and 15. Individual horizontal and vertical thrshold setting devices 12 and 13, the counters 14 and 15 and the detection circuits 6 and 7 determine relative coordinates, and a recording address designating circuit 18 desigates an address. An image information recorder 20 records the information of an A/D conversion circuit 19 in its address. After injecting the contrast medium, an x-ray tube 1 is set to a diagnostic part, and the outputs of individual horizontal and vertical coordintes decision circuits 16 and 17 are inputted in a circuit 21 which designates the address of an image information which is used as a mask image. |
