| 摘要 |
PURPOSE:To eliminate the necessity of a complicated and expensive synchronous scanning mechanism, by scanning an object with X-ray fluxes produced through plural X-ray slits and picking up images without synchronizing the image pickup of a TV camera to the scanning position of the X-ray fluxes when an image is constituted by picking up the output image of an X-ray image tube with the TV camera. CONSTITUTION:Plural X-ray slits 2 are provided between an X-ray image source 1 and object and the object is scanned with X-ray fluxes 14 by irradiating X-rays in a pulse-like condition by means of the signal of a synchronizing signal generator 12. Output images of an X-ray image tube 5 is picked up as one frame of image by means of a TV camera at every one pulse of the X-rays and, before the object is scanned with an X-ray scanning slit, all the signals remaining in a frame memory 10 are erased and the signal from the TV camera 7 and signal of the frame memory 10 are compared with each other by a signal comparator 8. After the comparison, signals having larger values are recorded in another frame memory 9 and, when image processing of one frame quantity is completed, the record is shifted to the frame memory 10. This image-pickup recording is performed until the X-ray slit completes the scanning of the object and, after completion, the signal of the frame memory 10 is displayed on a receiver.
|
