Sechtem U, Pflugfelder P W, Gould R G, Cassidy M M, Higgins C B
Radiology. 1987 Jun;163(3):697-702. doi: 10.1148/radiology.163.3.3575717.
Cine magnetic resonance (MR) imaging is a new, rapid MR pulse sequence that acquires up to 32 images per cardiac cycle at up to four levels of the heart within 4 minutes. In this study, the whole heart was encompassed by contiguous 10-mm transverse sections. Ventricular volumes were calculated by adding luminal areas determined in each section at end-diastole and end-systole. The left ventricular volume index was 57 ml/m2 +/- 9 at end-diastole and 17 ml/m2 +/- 4 at end-systole. The right ventricular volume index was 63 ml/m2 +/- 9 at end-diastole and 22 ml/m2 +/- 6 at end-systole. The left to right ventricular stroke volume ratio was 0.97 +/- 0.06, which was not statistically different from the theoretically expected ratio of 1. Interobserver and intraobserver measurements were closely correlated. Volume measurements were validated with two-dimensional echocardiography in five volunteers. Cine MR imaging allows reproducible three-dimensional measurement of right and left ventricular volumes with short imaging time and good temporal resolution.
电影磁共振（MR）成像术是一种全新的快速MR脉冲序列，可在4分钟内于心脏的四个层面上每个心动周期采集多达32幅图像。在本研究中，整个心脏由连续的10毫米横断面覆盖。通过将舒张末期和收缩末期各层面所确定的管腔面积相加来计算心室容积。舒张末期左心室容积指数为57 ml/m²±9，收缩末期为17 ml/m²±4。舒张末期右心室容积指数为63 ml/m²±9，收缩末期为22 ml/m²±6。左、右心室每搏输出量之比为0.97±0.06，与理论预期比值1无统计学差异。观察者间和观察者内测量结果密切相关。在5名志愿者中用二维超声心动图对容积测量结果进行了验证。电影磁共振成像术能够在短成像时间和良好的时间分辨率下对右心室和左心室容积进行可重复的三维测量。
