摘要
目的探讨实时三维彩色多普勒血流成像(RT-3DCDFI)定量评估主动脉瓣反流的价值。方法选取17例单纯性主动脉瓣反流。实时三维超声心动图采集全容积数据库和三维彩色血流信号数据库,导入TomTec三维图像工作站脱机测量左室舒张末期容积(LVEDV)、左室收缩末期容积(LVESV)和主动脉瓣彩色反流束容积(RJV),并计算左室每搏量(LVSV)和RJV/LVSV(%)。MRI测量LVEDV、LVESV和RJV,并计算LVSV和RJV/LVSV(%)。RT-3DCDFI和MRI的测值行相关性分析。结果RT-3DCDFI和MRI评价主动脉瓣反流的测值相关性良好,其中RJV测值相关性为r=0.92,Y=0.88X+3.32,P<0.0001,二者间的均数差为-2.0ml,标准差为9.5ml;RJV/LVSV(%)测值的相关性为r=0.88,Y=1.16X-10.74,P<0.0001,二者间的均数差为-2.8%,标准差为7.9%。结论RT-3DCDFI可对主动脉瓣反流进行准确定量评估,为临床评价主动脉瓣反流提供了一种简便、可靠的新方法。
Objective To explore the accuracy of real-time three-dimensional color Doppler flow imaging （RT-3D CDFI） in evaluating the severity of aortic regurgitation. Methods In seventeen patients with isolated aortic regurgitation, real-time three-dimensional echocardiography studies were performed to acquire three-dimensional color Doppler flow data and full-volume data. All data were imported and processed with TomTec three-dimensional imaging workstation, regurgitate flow jet volumes （RJV）, left ventricular end-diastolic volumes （LVEDV）, end-systolic volumes （LVESV） were obtained, then left ventricular stroke volumes （LVSV） and RJV/LVSV （%） were calculated. MRI scanning proceeded immediately after echocardiography examination. The RJV, RJV/LVSV （%） obtained by MRI were served as reference values. Results Aortic RJV measured by the RT-3D CDFI method showed a good correlation with the MRI measurements （r：0.92, Y=0.88X＋3.32, P〈0. 0001） ; the mean difference （SD） between the two methods was- 2.0 （9.5） ml. RJV/LVSV （%） estimated by RT-3D CDFI also correlated well with the values obtained MRI （r=0.88, Y=1.16X-10.74, P〈0. 0001）; the mean difference （SD） between the two methods was -2.8% （7.9%）. Conclusion The newly developed RT-3D CDFI technique is feasible in the majority of patients. In patients with eccentric aortic regurgitation, this new modality provides additional information to that obtained from two-dimensional examination, which overcomes the inherent limitations of two-dimensional echocardiography Doppler flow imaging by depicting the full extent of the jet trajectory. In addition, RT-3D CDFI examination is accurate and time-saving in quantitative assessing of aortic regurgitation.
出处
《中国医学影像技术》
CSCD
北大核心
2006年第4期483-486,共4页
Chinese Journal of Medical Imaging Technology
基金
湖北省科技厅自然科学基金资助(4-259)。
关键词
实时三维超声心动图
磁共振成像
主动脉瓣关闭不全
Real-time three-dimensional echocardiography
Magnetic resonance imaging
Aortic valve insufficiency
