Continuous wave ultrasonic Doppler tomography

被引：5
|
作者：
Liang, Haidong-Dong [1 ,2 ]
Tsui, Chun Sing Louis [1 ]
Halliwell, Michael [1 ]
Wells, Peter N. T. [2 ]
机构：
[1] Univ Hosp Bristol NHS Fdn Trust, Bristol Gen Hosp, Dept Med Phys & Bioengn, Bristol BS1 6SY, Avon, England
[2] Cardiff Univ, Sch Engn, Cardiff CF24 3AA, S Glam, Wales
来源：
INTERFACE FOCUS | 2011年 / 1卷 / 04期
基金：
美国国家卫生研究院; 英国工程与自然科学研究理事会;
关键词：
Doppler tomography; ultrasonic imaging; medical imaging; coherent processing; incoherent processing; MOTION;
D O I：
10.1098/rsfs.2011.0018
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In continuous wave ultrasonic Doppler tomography (DT), the ultrasonic beam moves relative to the scanned object to acquire Doppler-shifted frequency spectra which correspond to cross-range projections of the scattering and reflecting structures within the object. The relative motion can be circular or linear. These data are then backprojected to reconstruct the two-dimensional image of the object cross section. By using coherent processing, the spatial resolution of ultrasonic DT is close to an order of magnitude better than that of traditional pulse-echo imaging at the same ultrasound frequency.
引用
收藏
页码：665 / 672
页数：8
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