CAJ | 학술논문

目的应用脉冲波/组织多普勒(PW/TDI)双模式技术定量测定多普勒心脏血流速度的低估值,探讨其矫正方法.方法利用双模式技术同步记录40例健康志愿者主动脉瓣、二尖瓣、三尖瓣、肺动脉瓣跨瓣血流及瓣环组织同方向多普勒运动速度,测量速度并计算低估值.结果 PW/TDI双模式技术可以获得相对于瓣膜的真实血流速度,常规超声多普勒测得的血流速度明显低估了真实的血流速度(P＜0.001),其中主动脉血流速度被低估(8.5±1.2)％,肺动脉血流速度被低估(6.6±1.1)％,二尖瓣E峰、A峰血流速度分别被低估(13.4±1.7)％、(16.7±3.4)％,三尖瓣E峰、A峰血流速度分别被低估(18.7±1.9)％、(26.0±16.1)％.结论多普勒超声测量的心脏血流速度明显低估了真实的血流速度,这种低估可以利用PW/TDI双模式技术根据运动相对性基本原理进行定量测定和矫正.
목적 응용맥충파/조직다보륵(PW/TDI)쌍모식기술정량측정다보륵심장혈류속도적저고치,탐토기교정방법.방법 이용쌍모식기술동보기록40례건강지원자주동맥판、이첨판、삼첨판、폐동맥판과판혈류급판배조직동방향다보륵운동속도,측량속도병계산저고치.결과 PW/TDI쌍모식기술가이획득상대우판막적진실혈류속도,상규초성다보륵측득적혈류속도명현저고료진실적혈류속도(P＜0.001),기중주동맥혈류속도피저고(8.5±1.2)％,폐동맥혈류속도피저고(6.6±1.1)％,이첨판E봉、A봉혈류속도분별피저고(13.4±1.7)％、(16.7±3.4)％,삼첨판E봉、A봉혈류속도분별피저고(18.7±1.9)％、(26.0±16.1)％.결론 다보륵초성측량적심장혈류속도명현저고료진실적혈류속도,저충저고가이이용PW/TDI쌍모식기술근거운동상대성기본원리진행정량측정화교정.
Objective To quantify the underestimation of cardiac blood flow velocities measured by Doppler echocardiography and to explore a method for correction using a new explored dual PW/TDI technique.Methods The dual PW/DTI mode was used to simultaneously record the aortic,mitral,tricuspid and pulmonary valvular blood flow velocity and the adjacent valvular annulus velocity in forty healthy volunteers,then the underestimations of the flow velocities were calculated.Results The true blood flow velocity relative to the valvular annulus could be obtained by dual PW/TDI technique.Conventional Doppler echocardiographic measurements significantly underestimated the true velocity ( P ＜ 0.001).The actual aortic blood flow velocity had a significant underestimation of (8.5 ± 1.2) ％,the actual flow velocity of the pulmonary artery had a significant underestimation of (6.6 ± 1.1) ％,the underestimations of E and A wave of mitralvalve's were (13.4 ± 1.7)％ and (16.7± 3.4)％,the underestimations of E and A wave of tricuspid valve' s were ( 18.7 ± 1.9) ％ and (26.0 ± 16.1 ) ％.Conclusions The cardiac blood flow velocity measured by Doppler ultrasound has been significantly underestimated and this underestimation can be quantified and corrected using dual PW/DTI technique based on the principle of motion relativity.