摘要
目的应用血流向量成像（VFM）观察并量化左室内血流变化情况，评价慢性心力衰竭状态对心腔内血流的影响。方法选取慢性心力衰竭患者27例、正常对照者30例为观察对象，利用VFM技术采集左室内血流向量图像，应用VFM分析软件DSA—RS1测量左室长轴切面不同节段时间-流量（T—F）的变化及在收缩与舒张期峰值处相应的血流参数：取样线垂直方向的向量速度测值（NVP）、取样线平行方向的向量速度测值（PVP）、取样线上综合向量测值（VP）、取样线所通过的流量测值（FP）。结果T—F曲线显示慢性心力衰竭患者的基底段、中间段在收缩期峰值S、舒张期峰值E及心房收缩期A较正常对照组均明显减低（P〈0．05）。慢性心力衰竭患者的基底段、中间段在收缩期峰值s及舒张期峰值E处相应的血流参数NVP、VP、FP较正常对照组均明显减低（P〈0．05）。结论VFM技术可直观、无创地从血流动力学角度评价慢性心力衰竭患者的心脏功能状态。
Objective To evaluate blood flow structure and quantify the variation of the flow within left ventricle,assess the impact of chronic heart failure（CHF） by vector flow mapping（VFM）. Methods Twenty-seven patients with chronic heart failure and thirty controls were involved. The flow vector images on the section plane of the flow within the left ventricle were acquired by VFM. Time-flow（T-F） curve and all other peak systolic and diastolic flow curve include normal velocity profile, parallel velocity profile, vector profile,flow profile were analyzed by DSA RS1 program. Results Ventricular ejection peak S, rapid ventricular filling peak E and atrial systole peak A were relatively lower at basal and middle segments in CHF group than normal control group. Normal velocity profile,velocity profile,flow profile at peak S and E were lower at basal and middle segments in CHF group than normal control group. Conclusions VFM technology could provide quantitative and intuitive information to demonstrate the flow structure of the ventricle and evaluate the cardiac function in patients with CHF.
出处
《中华超声影像学杂志》
CSCD
北大核心
2013年第5期383-387,共5页
Chinese Journal of Ultrasonography
关键词
超声心动描记术
心力衰竭
充血性
心室功能
左
血流向量成像
Echocardiography
Heart failure, congestive
Ventricular function, left
-Vector flow mapping
