Hackbarth W, Bircks W, Pölitz B, Körfer R, Schmiel F K, Spiller P
Rofo. 1980 May;132(5):554-60. doi: 10.1055/s-2008-1056618.
Electromagnetic flow measurements in aorto coronary bypass grafts and cine angiography were performed simultaneously during bypass surgery. Using the front velocities of injected boli of contrast medium the videodensitometric measurement (QVD) overestimates the electromagnetically measured flow (QEM) systematically about 20% (QVD = 1.26 . QEM = 4 ml/min; Syx = 10.8 ml/min; r = 0.97). During the passage of the front of the contrast medium through the videodensitometric measuring windows, the flow is altered by the injection about + 13.6 ml/min on an average.
在冠状动脉搭桥手术期间，同时进行了主动脉冠状动脉搭桥移植物中的电磁流量测量和电影血管造影。使用注射造影剂团块的前沿速度，视频密度测量法（QVD）系统地高估了电磁测量流量（QEM）约20%（QVD = 1.26×QEM，QEM = 4毫升/分钟；Syx = 10.8毫升/分钟；r = 0.97）。在造影剂前沿通过视频密度测量窗口的过程中，注射平均使流量改变约 +13.6毫升/分钟。
