Measurement of right ventricular volume using cine computed tomography.
Measurement of right ventricular volume using cine computed tomography.
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使用电影计算机断层扫描测量右心室容积。
DOI：
10.1097/00004424-198706000-00001
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发表时间：
1987
影响因子：
6.7
通讯作者：
Collins,SM
中科院分区：
文献类型：
--
作者：
Mahoney,LT;Smith,W;Noel,MP;Florentine,M;Skorton,DJ;Collins,SM
右心室容积测量在临床上非常重要，尤其是在先天性心脏病的评估中。然而，右心室腔的复杂结构使其体积的评估变得困难。电影计算机断层扫描（CT）允许以平行、连续、高分辨率断层图像描绘心脏解剖结构。为了测试电影CT是否能够准确、可重复地确定右心室容积，对11只离体、固定的犬心脏进行了离体扫描。由两名独立的观察者描绘右心室腔的内膜轮廓。在每个图像中测量右心室腔面积，并通过Simpson规则近似计算右心室容积。通过腔液体容量测量实际右心室容积（范围24-86.5 mL）。从电影CT数据导出的右心室容积与实际容积密切相关（R=. 96，电影CT体积= 0.99 x [实际体积]+0.2 mL）。观察者间相关性极佳（R=. 99）。它的结论是电影CT扫描允许准确的，可重复的测定右心室容积离体。这项技术应立即适用于儿童和成人右心室功能的无创评价。
Volume measurements of the right ventricle are clinically important, particularly in the assessment of congenital heart disease. The complex configuration of the right ventricular cavity, however, makes assessment of its volume difficult. Cine computed tomography (CT) permits depiction of cardiac anatomy in parallel, sequential, high-resolution tomographic images. To test whether cine CT would allow accurate, reproducible determination of right ventricular volumes, 11 excised, fixed canine hearts were scanned ex vivo. The endocardial contours of the right ventricular cavity were traced by two independent observers. The right ventricular cavity areas were measured in each image and right ventricular volume calculated by a Simpson's rule approximation. Actual right ventricular volume (range 24-86.5 mL) was measured by cavity fluid capacity. Right ventricular volumes derived from cine CT data correlated closely with actual volumes (R=. 96, cine CT volume= 0.99 x [actual volume]+ 0.2 mL). Interobserver correlation was excellent (R=. 99). It is concluded that cine CT scanning permits accurate, reproducible determination of right ventricular volume ex vivo. This technique should be immediately applicable to the noninvasive evaluation of right ventricular function in children and adults.