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| Quantitative evaluation of left ventricular myocardial systolic synchrony in normal subjects by real-time three-dimensional echocardiography and tissue velocity imaging |
| LI Yu-feng1, DENG Yong-huai2, REN Wei-dong1, WANG Ling3 |
| 1. Cardiovascular Test Department, the First Affiliated Hospital of China Medical University, Shenyang 110001, China; 2. Nuclear Industry Geology Bureau 246 Hospital of Liaoning Province, Xingcheng Liaoning 125100, China; 3. No.3 People Hospital of Ningxia Muslim Autonomous Region, Yinchuan 750004, China |
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Abstract Objective: To evaluate left ventricular myocardial systolic synchrony in normal subjects by real-time three-dimensional echocardiography(RT-3DE) and tissue velocity imaging(TVI). Methods: Twenty-seven normal subjects were selected randomly. The time to the point of peak velocity(Tv) during systolic phase, to the point of minimal volume(Tmv) and cardiac cycle were obtained by the on-line Qlab soft ware. Then the Rst was calculated. Results: There was no significant difference in Rst among the 12 segments of left ventricle in normal subjects by RT-3DE and TVI(P>0.05). Significant correlation existed between the Rst obtained by RT-3DE and the one calculated by TVI in normal subjects(r=0.814). Conclusion: Both RT-3DE and TVI can evaluate left ventricular myocardial systolic synchrony in normal subjects noninvasively and quantitatively, but RT-3DE can provide a novel, quick and convenient technique.
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Received: 20 September 2007
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2008, Vol. 19 
