Engels G, Reynen K, Müller E, Wilke N, Bachmann K
Medizinische Klinik II, Universität Erlangen-Nürnberg.
Z Kardiol. 1993 Jun;82(6):345-51.
Flow-encoded magnetic resonance (MR) sequences allow the quantitative evaluation of blood flow in any plane of the heart and vessels. For the first time, ejection and regurgitation volumes of the left ventricle in the ascending aorta can be measured noninvasively. Thus, the regurgitation fraction as a reliable measure of aortic valve insufficiency can be determined. The quantitative evaluation of aortic valve insufficiency was done by MR in comparison to ultrasound-Doppler and, in some cases, in comparison to heart catheterization. A good correlation of grading aortic valve insufficiency by the new MR-technique in comparison to clinical graduation is shown. The development of a new noninvasive standard for quantification of aortic valve insufficiency seems possible.
流动编码磁共振（MR）序列能够对心脏和血管任意平面的血流进行定量评估。首次可以无创测量升主动脉中左心室的射血和反流容积。因此，能够确定反流分数，作为评估主动脉瓣关闭不全的可靠指标。通过磁共振成像与超声多普勒相比，在某些情况下还与心导管检查相比，对主动脉瓣关闭不全进行了定量评估。结果表明，新的磁共振技术对主动脉瓣关闭不全的分级与临床分级具有良好的相关性。开发一种用于定量评估主动脉瓣关闭不全的新的无创标准似乎是可行的。
