Lyons J, Norell M, Gardener J, Davies S, Balcon R, Layton C
Cardiac Department, London Chest Hospital.
Br Heart J. 1989 Aug;62(2):102-11. doi: 10.1136/hrt.62.2.102.
Phase and amplitude analysis was applied to intravenous digital left ventriculograms to avoid the artefacts associated with image subtraction. Eight controls and 40 patients with known coronary artery disease underwent digital left ventriculography before and after a symptom limited supine bicycle exercise test. The resultant images were subjected to phase and amplitude analyses. In the control group there was no deterioration in left ventricular wall motion after exercise. In 30 of the 40 patients there was a deterioration in wall motion on exercise. This group contained all eight patients with three vessel disease and 12 of the 17 patients with two vessel disease. Ten patients showed no change in wall motion--five with one vessel disease and five with two vessel disease. Phase and amplitude analysis of digital left ventriculograms is a method of detecting exercise induced myocardial ischaemia that may help in the assessment of patients with coronary artery disease.
对静脉注射数字左心室造影图像进行相位和幅度分析，以避免与图像减法相关的伪影。8名对照组患者和40名已知患有冠状动脉疾病的患者在症状受限的仰卧位自行车运动试验前后接受了数字左心室造影。对所得图像进行相位和幅度分析。对照组中运动后左心室壁运动没有恶化。40名患者中有30名运动时壁运动恶化。该组包括所有8名三支血管病变患者和17名双支血管病变患者中的12名。10名患者壁运动无变化——5名单支血管病变患者和5名双支血管病变患者。数字左心室造影的相位和幅度分析是一种检测运动诱发心肌缺血的方法，可能有助于评估冠状动脉疾病患者。
