Department Radiology-MRI (-1K12), Ghent University Hospital, De Pintelaan 185, B-9000 Gent, Belgium.
Eur Radiol. 2010 Feb;20(2):410-21. doi: 10.1007/s00330-009-1568-2. Epub 2009 Aug 29.
Cardiovascular magnetic resonance measurements of the volumes of the right and left ventricle and of the flows in the ascending aorta and main pulmonary artery contribute to the assessment of patients with valvular regurgitation or intracardiac or extracardiac shunts. Ventricular volumes are measured by planimetry and summation of end-diastolic and end-systolic areas measured in a stack of ventricular short-axis cines. The volumes of blood flowing through planes transecting the great arteries are measured using phase contrast velocity mapping. The two approaches are essentially different and can be used either for mutual validation, or separately or in combination to quantify regurgitation and/or shunting. In the presence of shunts, the relations between the stroke volumes and arterial flows of each side of the heart vary depending on the level of shunting (for example, atrial, ventricular or ductal).
This article aims to explain and illustrate the technical and theoretical basis for calculations using volumetric and flow measurements, providing formulae and diagrams to facilitate the interpretation of results.
心血管磁共振测量右心室和左心室的容积以及升主动脉和主肺动脉的血流量有助于评估瓣膜反流或心内或心外分流的患者。心室容积通过在心室短轴 cine 堆栈中测量的舒张末期和收缩末期面积的平面测量和求和来测量。穿过大动脉的平面的血流容积使用相位对比速度映射来测量。这两种方法本质上是不同的，可以用于相互验证，或者单独或组合使用来量化反流和/或分流。在分流存在的情况下，心脏每一侧的每搏量和动脉流量之间的关系取决于分流的程度（例如，心房、心室或导管）。
本文旨在解释和说明使用容积和流量测量进行计算的技术和理论基础，提供公式和图表以方便解释结果。
