| 摘要 |
PURPOSE:To make a diagnosis at a dynamic position possible by increasing the frequency of exposure per second, by using a solid pickup element as the pickup tube of an intermittent exposure X-ray television unit. CONSTITUTION:A television set has two-field frames and displays a picture of 30 frames per second, so that the frequency of X-ray exposure should be set to 30 per second. As a result, trigger pulse generating circuit 37 generates a fixed trigger pulse at intervals of 1/30 second and supplies it to X-ray controller 38. Next, X-ray controller 38 supplies a primary input of a preset tube voltage and tube current value to high-voltage generator 12 and X-ray tube 1 emits pulsating X-rays. The X-ray image of them is image-formed on a solid pickup element. Consequently, information is read from the pickup unit corresponding to the scanning of the television set within a fixed time synchronizing with the X-ray exposure. |
