ULTRA-HIGH FRAME RATE TISSUE DOPPLER IMAGING

被引：57
作者：
Brekke, Birger [1 ,2 ]
Nilsen, Lars C. L. [1 ,2 ]
Lund, Joakim [1 ,2 ]
Torp, Hans [1 ,2 ]
Bjastad, Tore [3 ]
Amundsen, Brage H. [1 ,2 ,4 ]
Stoylen, Asbjorn [1 ,2 ,4 ]
Aase, Svein A. [3 ]
机构：
[1] Norwegian Univ Sci & Technol, MI Lab, N-7491 Trondheim, Norway
[2] Norwegian Univ Sci & Technol, Dept Circulat & Med Imaging, N-7491 Trondheim, Norway
[3] GE Vingmed Ultrasound, Horten, Norway
[4] St Olav Hosp, Dept Cardiol, Trondheim, Norway
来源：
ULTRASOUND IN MEDICINE AND BIOLOGY | 2014年 / 40卷 / 01期
关键词：
Echocardiography; Myocardium function; Continuous acquisition; Plane wave imaging; Multi-line acquisition; Mechanical wave propagation; Pre-ejection period; Aortic valve closure; STRAIN-RATE; IN-VIVO; MYOCARDIAL VELOCITIES; WALL; MOTION; CONTRACTILITY; DEFORMATION; PREEJECTION; EJECTION; CLOSURE;
D O I：
10.1016/j.ultrasmedbio.2013.09.012
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
We describe a new tissue Doppler imaging (TDI) method, ultra-high frame rate tissue Doppler imaging (UFR-TDI). With two broad transmit beams covering only the ventricular walls, we achieve 1200 frames/s in a four-chamber apical view. We examined 10 healthy volunteers to study the feasibility of this method. Ultra-high-frame-rate TDI provided peak annular velocities and time to peak S' intervals in good agreement with those measured with conventional TDI. Moreover, UFR-TDI provided additional information in early and late systole: In all subjects, the method was able to separate the timing of electrical activation, start of mechanical contraction, mitral valve closure and start of ejection. The earliest mechanical activation was seen before mitral valve closure. The method was also able to measure the propagation speed of the mechanical wave created by aortic valve closure. (C) 2014 World Federation for Ultrasound in Medicine & Biology.
引用
收藏
页码：222 / 231
页数：10
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