实时三维超声心动图评价犬右心室容量和收缩功能  

Evaluation of canine right ventricular volume and systolic function by real time three-dimensional echocardiography

作　　者：王林[1] 邓又斌[2] 武心萍[1] 刘娅妮[2] 李天亮[2] 刘静华[2] 向慧娟[2] 

机构地区：[1]江苏省中西医结合医院功能科,江苏南京210028 [2]华中科技大学同济医学院附属同济医院超声影像科,湖北武汉430030

出　　处：《中国医学影像技术》2009年第6期960-962,共3页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨实时三维超声心动图(RT-3DE)测量犬右心室容量和收缩功能的可靠性。方法使用RT3DE采集6只健康杂种犬基础状态、不同程度心功能减退状态的右心室舒张末期容积(RVEDV)和收缩末期容积(RVESV),并计算右心室每搏量(RVSV)和射血分数(RVEF);同时测量右心室游离壁三尖瓣环处的收缩期位移(S)、肺动脉内径、肺动脉血流频谱及其速度-时间积分(VTI)。根据公式[Q=(π/4)×D2×VTI]得出肺动脉血流量(Q),比较三维容积法测定的收缩功能与S及Q的相关性。结果RT-3DE测量的RVSV、RVEF均与S呈正相关(r=0.89;r=0.94);RVSV与Q之间呈显著正相关(r=0.97)。结论RT-3DE为定量分析右心室容量和收缩功能提供了无创和可靠的新途径。Objective To observe the reliability of measuring right ventricular volume and systolic function by three-dimensional echocardiography. Methods Right ventricular ＂Full Volume＂ imaging at baseline and cardiac insufficiency in 6 dogs was acquired by RT-3DE. Right ventricular end diastolic volume （RVEDV） and right ventricular end systolic volume （RVESV） were outlined using apical three plane method by the analysis software of RT 3DE offline. RVSV and RVEF were calculated [RVSV= RVEDV- RVESV; RVEF= （RVEDV- RVESV）/RVEDV]. Tricuspid annual systolic displacement was measured by quantitative tissue velocity imaging （QTVI）. The diameter （D） of main pulmonary was measured by two dimensional echocardiography. The velocity time （VTI） was acquired from main pulmonary blood flow spectra. The main pulmonary blood flow quantity （Q） was derived from D and VTI （Q= [π/4] × D^2 × VTI）. Results There was positive cot relation of TVS to RVSV and to RVEF derived from RT-3DE （r=0.89; r=0. 94）. There was strong positive correlation between RVSV and Q （r=0.97）. Conclusion Three-dimensional echocardiography can be used to determine right ventricular volume and systolic function rapidly, accurately and noninvasively.

关 键 词：超声心动描记术 三维 收缩功能 右心室容积 

分 类 号：R540.45[医药卫生—心血管疾病]