电子束CT在健康国人心血管正常径线测量及功能值分析中的应用(附50例报告)

Cardiovascular measurement and cardiac function analysis with electron beam computed tomography in health Chinese people (50 cases report)

目的用电子束ＣＴ（ＥＢＣＴ）测量国人心血管正常解剖径线及心功能值。方法５０例健康人（男２７例，女２３例，平均年龄４７．７岁），利用ＥＢＣＴ横断和心脏短轴电影扫描，分别测量主动脉、肺动脉、左心房和左心室径线，以及左心室心肌厚度、心肌增厚率等；利用心功能分析软件（ｗａｌｓｔｕｄｙ），计算左、右心室各功能指标。结果得到ＥＢＣＴ心脏电影扫描各主要参数；正常国人主、肺动脉、左心房室及心肌径线测量值男性大于女性，但无显著性差异（Ｐ＞０．０５）；左、右心室收缩末容积（ＥＳＶ）、每搏输出量（ＳＶ）、射血分数（ＥＦ）、心排出量（ＣＯ）和心指数（ＣＩ），男性大于女性，但无显著性差异（Ｐ＞０．０５）；左室舒张末容积（ＥＤＶ）和肌块重量（ＭｙＭ），男性大于女性，且有非常显著性差异（Ｐ＜０．００１）。结论ＥＢＣＴ是心血管解剖和心功能值计算的准确定量方法。

Purpose To quantitatively measure cardiovascular diameters and function parameters by using electron beam computed tomography, EBCT). Methods Men 50 health Chinese people accepted EBCT common transverse and short axis enhanced movie scan(27 men, 23 women, average age 47.7 years.). The transverse scan was used to measure the diameters of the ascending aorta, discending aorta, pulmonary artery and left atrium. The movie study was used to measure the left ventricular mycardium thickness and analysis global, sectional and segmental function of the right and left ventricles. Results The cardiovascular diameters and cardiac functional parameters were calculated. The diameters and most functional parameters (end syspoble volume, syspole volume, ejection fraction, cardiac output, cardiac index)of normal Chinese men were greater than those of women ( P >0.05). However, the EDV and MyM(myocardium mass) of both ventricles were significant ( P <0.001). Conclusion EBCT is a minimally invasive method for cardiovascular measurement and cardiac function evaluation.