64排容积CT和超声心动图评价右心室功能的比较研究

目的：以超声心动图为标准,探讨64排容积CT（VCT）和超声心动图对右心室功能各评价指标的相关性,评价64排VCT测量右心室功能的准确性及可行性。方法：对36例64排VCT冠状动脉造影患者,使用专业心脏软件测量右心室功能,并与超声心动图所得右心室功能各项指标相比较,包括右室舒张末期容积（RVEDV）、收缩末期容积（RVESV）、每搏量（RVSV）及射血分数（RVEF）等心功能指标。结果：64排VCT和超声心动图测定的右心室功能指标值分别为RVEDV[125.3±20.5）ml比（118.0±19.4）ml],RVESV[（58.1±23.4）ml比（55.2±21.6）ml],RVSV[（71.2±15.2）ml比（74.8±16.3）ml],RVEF[（51.8±6.6）%比（58.4±8.5）%],P均〉0.05,差异无显著性;两者相关性较高,r=0.617～0.813。结论：64排容积CT对右心室功能定量评价准确可靠。一次64排容积CT冠状动脉成像可以同时评估冠状动脉狭窄情况及右心室功能参数。

Comparison between 64 - slice volume CT and echocardiography in evaluating right ventricular function

Objective:With echocardiography as the standard,to study correlation among indexes of echocardiography and 64-slice volume CT(VCT) in evaluation of right ventricular function and explore accuracy and feasibility of 64-slice VCT in measuring right ventricular function.Methods:A total of 36 cases underwent 64-slice VCT coronary angiography measurement of right ventricular function using professional cardiac software,and the results were compared with those of echocardiography,including right ventricular end-diastolic volume(RVEDV),end-systolic volume(RVESV),stroke volume(RVSV) and ejection fraction(RVEF).Results: There were no significant differences in RVEDV[(125.3±20.5)]ml vs.(118.0±19.4)ml],RVESV[(58.1±23.4)ml vs.(55.2±21.6)ml],RVSV [(71.2 ±15.2)ml vs.(74.8±16.3)ml],RVEF [(51.8±6.6)% vs.(58.4±8.5)%]between 64-slice VCT and echocardiography(P>0.05).The correlation between 64-slice VCT and echocardiography was good(r=0.617～0.813).Conclusion:The 64-slice volume CT no only accurately evaluate coronary artery stenosis,but also accurately evaluate right ventricular function at the same time.