Firmin D N, Nayler G L, Klipstein R H, Underwood S R, Rees R S, Longmore D B
Magnetic Resonance Unit, National Heart and Chest Hospitals, London, England.
J Comput Assist Tomogr. 1987 Sep-Oct;11(5):751-6. doi: 10.1097/00004728-198709000-00001.
Calculations of left ventricular stroke volume obtained by summing the areas of multiple contiguous transverse magnetic resonance (MR) slices in systole and diastole using a spin echo sequence have been compared in 10 healthy volunteers with the stroke output derived from velocity maps in the ascending aorta using a field even-echo rephasing sequence. The results gave a correlation coefficient of 0.97 (p less than 0.001) and a standard error of estimate of 3.2 ml. Velocity maps have also been obtained in the pulmonary artery, the descending aorta, and the superior vena cava. The accuracy of this technique and the theoretical limitations of MR measurements have implications for the earlier detection of atheroma in the coronary and other arteries.
在10名健康志愿者中，对使用自旋回波序列通过在收缩期和舒张期对多个连续横向磁共振（MR）切片的面积求和来获得左心室搏出量的计算结果，与使用场均匀回波重聚序列从升主动脉速度图得出的搏出量进行了比较。结果得出相关系数为0.97（p小于0.001），估计标准误差为3.2毫升。还在肺动脉、降主动脉和上腔静脉中获得了速度图。该技术的准确性以及MR测量的理论局限性对冠状动脉和其他动脉粥样硬化的早期检测具有重要意义。
