Fritz S L, Mirvis S E, Osher Pais S, Roys S
Department of Diagnostic Radiology, University of Maryland Medical System/Hospital, Baltimore 21201.
Med Phys. 1988 Jul-Aug;15(4):600-3. doi: 10.1118/1.596211.
The authors have investigated the effect of 5 frames/s television fluoroscopy on the time required to selectively catheterize five test arteries in an angiographic phantom. Here, 5 frames/s acquisition was accomplished by sampling frames from a 30 frames/s video signal. Sampled frames were stored in a video memory which provided continuous display to the fluoroscopist between samples. The test phantom was a plastic model of an aorta with branching vessels immersed in an isodense suspension of barium in water. For four of the five vessels there was no significant difference in time required for catheter placement between 30 frames/s and 5 frames/s.
作者研究了每秒5帧的电视透视对在血管造影模型中选择性插入五条测试动脉所需时间的影响。在此，每秒5帧的采集是通过从每秒30帧的视频信号中采样帧来完成的。采样帧存储在视频存储器中，该存储器在采样之间向透视医师提供连续显示。测试模型是一个主动脉塑料模型，其分支血管浸没在水中钡的等密度悬浮液中。对于五条血管中的四条，在每秒30帧和每秒5帧之间放置导管所需的时间没有显著差异。
