INVIVO VALIDATION OF MR VELOCITY IMAGING
INVIVO VALIDATION OF MR VELOCITY IMAGING
复制标题
DOI：
10.1097/00004728-198709000-00001
复制
发表时间：
1987-09-01
影响因子：
1.3
通讯作者：
LONGMORE, DB
中科院分区：
文献类型：
--
作者：
FIRMIN, DN;NAYLER, GL;LONGMORE, DB
利用自旋回波序列对收缩期和舒张期连续多幅横向磁共振（MR）切片的面积求和，计算出左心室卒中容量，并将10名健康志愿者的左心室卒中输出与利用场均匀回波复相序列获得的升主动脉速度图进行比较。结果的相关系数为0.97 (p < 0.001)，估计的标准误差为3.2 ml。还获得了肺动脉、降主动脉和上腔静脉的速度图。该技术的准确性和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。
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 < 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.