Bonzel T, Wollschläger H, Gick M, Löllgen H, Just H
Schweiz Med Wochenschr Suppl. 1984;16:77-81.
The use of high resolution X-ray techniques for biplane coronary angiography can improve the quantitative assessment of coronary stenoses when perpendicular projections in both views can be achieved. Angiograms thus obtained of coronary stenoses before (n = 17) and after (n = 14) coronary dilatation were evaluated for mean and minimal stenosis diameters of two planes and for percent narrowing of stenoses (caliper measurements). Comparisons with transstenotic pressure gradients showed significant or highly significant correlations for all dimensional parameters. It is concluded that quantitative angiographic analysis of coronary stenoses yields highly reliable results of hemodynamic relevance. In addition, a mean diameter of less than 1.6 mm could be identified as indicating hemodynamically significant stenosis.
当能够获得双平面的垂直投影时，使用高分辨率X射线技术进行双平面冠状动脉造影可改善对冠状动脉狭窄的定量评估。对如此获得的17例冠状动脉扩张术前和14例术后冠状动脉狭窄的血管造影照片进行评估，测量两个平面的平均和最小狭窄直径以及狭窄的狭窄百分比（卡尺测量）。与跨狭窄压力梯度的比较显示，所有尺寸参数均存在显著或高度显著的相关性。得出的结论是，冠状动脉狭窄的定量血管造影分析产生了具有高度血流动力学相关性的可靠结果。此外，平均直径小于1.6mm可被确定为表明存在血流动力学显著狭窄。
