Souto Bayarri M, Masip Capdevila L, Remuiñan Pereira C, Suárez-Cuenca J J, Martínez Monzonís A, Couto Pérez M I, Carreira Villamor J M
Departamento de Radiología, Complejo Hospitalario Universitario de Santiago (CHUS), Universidad de Santiago de Compostela (USC), Santiago de Compostela, España.
Departamento de Radiología, Complejo Hospitalario Universitario de Santiago (CHUS), Universidad de Santiago de Compostela (USC), Santiago de Compostela, España.
Radiologia. 2015 Jan-Feb;57(1):50-5. doi: 10.1016/j.rx.2013.02.004. Epub 2013 Apr 23.
To compare the methods of right ventricle segmentation in the short-axis and 4-chamber planes in cardiac magnetic resonance imaging and to correlate the findings with those of the tricuspid annular plane systolic excursion (TAPSE) method in echocardiography.
We used a 1.5T MRI scanner to study 26 patients with diverse cardiovascular diseases. In all MRI studies, we obtained cine-mode images from the base to the apex in both the short-axis and 4-chamber planes using steady-state free precession sequences and 6mm thick slices. In all patients, we quantified the end-diastolic volume, end-systolic volume, and the ejection fraction of the right ventricle. On the same day as the cardiac magnetic resonance imaging study, 14 patients also underwent echocardiography with TAPSE calculation of right ventricular function.
No statistically significant differences were found in the volumes and function of the right ventricle calculated using the 2 segmentation methods. The correlation between the volume estimations by the two segmentation methods was excellent (r=0,95); the correlation for the ejection fraction was slightly lower (r=0,8). The correlation between the cardiac magnetic resonance imaging estimate of right ventricular ejection fraction and TAPSE was very low (r=0,2, P<.01).
Both ventricular segmentation methods quantify right ventricular function adequately. The correlation with the echocardiographic method is low.
比较心脏磁共振成像中短轴和四腔心平面的右心室分割方法，并将结果与超声心动图中的三尖瓣环平面收缩期位移（TAPSE）方法的结果进行关联。
我们使用1.5T MRI扫描仪研究了26例患有各种心血管疾病的患者。在所有MRI研究中，我们使用稳态自由进动序列和6mm厚的切片，在短轴和四腔心平面从心底到心尖获取电影模式图像。在所有患者中，我们对右心室的舒张末期容积、收缩末期容积和射血分数进行了量化。在进行心脏磁共振成像研究的同一天，14例患者还接受了超声心动图检查，并计算了右心室功能的TAPSE。
使用两种分割方法计算出的右心室容积和功能无统计学显著差异。两种分割方法的容积估计之间的相关性极佳（r = 0.95）；射血分数的相关性略低（r = 0.8）。心脏磁共振成像估计的右心室射血分数与TAPSE之间的相关性非常低（r = 0.2，P <.01）。
两种心室分割方法均能充分量化右心室功能。与超声心动图方法的相关性较低。
