摘要
目的以磁共振为对照，应用64层螺旋CT（MSCT）定量评价左心功能，探讨MSCT成像技术和屏气法MRI电影技术心功能评价指标的相关性及MSCT在冠心病左心功能评价中的应用价值。方法临床拟诊冠心病的患者20例，均自愿参加。全部病例均行心脏MSCT和MRI检查。结果MSCT和MRI两种方法的心功能指标无显著性差异，两种方法的心功能指标舒张末期容积（EDV）、收缩末期容积（ESV）、每搏输出量（SV）、左室射血分数（EF）、心肌质量（MM）相关性高，r值=0．72～0．92。MSCT所测EDV、ESV、SV和MM值较MRI偏大，MSCT所测EF值较MRI偏小。结论本研究显示64层螺旋CT在左心功能定量评价方面准确、可靠，与3．0T磁共振两种方法各指标之间相关性高。一次MSCT冠状动脉成像检查，可以同时评估冠状动脉狭窄情况和左心室功能。
Objective To assess functional parameters of left ventricle with 64-slice CT （MSCT） and the results were compared with MRI. Methods End-diastolic-volume （EDV）, end-systolic-volume （ESV）, stroke-volume （SV）, ejection-fraction （EF）, and myocardial mass （MM） were calculated based on CT data sets from 20 patients scheduled for noninvasive MSCT angiography of the coronaries suspected coronary artery disease （CAD）. The results from MSCT were compared with MRI. Results There was no significant difference among the measurements for MSCT and MRI of the ventricular function parameters. A strong correlation between MSCT and MRI （r=0. 72-0.92） was found for all parameters. However, EDV, ESV, SV, and MM were overestimated with MSCT compared to MRI, while EF was underestimated in MSCT. Conclusion A strong correlation between MSCT and MRI was found for all parameters. ECG-gated MSCT angiography of the heart is noninvasive assessment of the coronary tree, whereas the analysis of left ventricular parameters provides additional information of cardiac function without further radiation exposure or scan time.
出处
《中国医学影像技术》
CSCD
北大核心
2007年第1期66-69,共4页
Chinese Journal of Medical Imaging Technology
关键词
体层摄影术
X线计算机
磁共振成像
心室功能
左
Tomography, X-ray computed
Magnetic resonance imaging
Ventricular function, left
