X-ray device

Abstract

Abstract PURPOSE:To decrease an X-ray exposure dose without excerting adverse effect on the diagnosis by displaying an X-ray fluoroscopic picture continuously on a television monitor just before the intermission through the use of a video reproducing device even if the X-ray exposure for fluoroscopy is intermittent. CONSTITUTION:The fluoroscopic X-ray is exposed by a foot switch 4 as an operation switch and the exposure of X-ray is started via a foot switch input circuit 7, an X-ray exposure control circuit 5, and an X-ray controller 2. When the X- ray is exposed, a TV camera output video signal outputted from a TV camera controller 3 is reproduced by a TV monitor 17. In turning off the foot switch, an output video signal from a video recording amplifier circuit 12 is fed to a VSR14 via a gate circuit 13 and the VSR video recording is applied to one frame picture. Then an output of a trigger circuit 10 is fed to a switch circuit 15 at the same time and the switch is switched to a reproduction amplifier circuit 16. Further, a counter circuit 9 is controlled by a timer circuit 8 and the X- ray exposure is finished by a signal in synchronizing with a VD signal via the X-ray exposure control circuit 5. The picture for the said one frame's share is displayed on the TV monitor 17 continuously.

Inventors

• 👤 Tetsuo Kurihara
• 👤 栗原　哲郎

Bibliographic Details