APPLICATION OF BESSEL BEAM FOR DOPPLER VELOCITY ESTIMATION

被引:40
|
作者
LU, JY
XU, XL
ZOU, HH
GREENLEAF, JF
机构
[1] Biodynamics Research Unit Department of Physiology and Biophysics, Mayo Clinic and Foundation, Rochester
基金
美国国家卫生研究院;
关键词
D O I
10.1109/58.393108
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Limited-diffraction beams have a large depth of field and could be applied to medical imaging, tissue characterization, and nondestructive evaluation of materials. This paper reports the application of limited diffraction beams, specifically, the Bessel beam, to Doppler velocity estimation, The Bessel beam has the advantage that velocity estimation is less subject to the depth of moving objects and the Doppler spectrum has distinct shoulders that increase the accuracy of velocity (both magnitude and Doppler angle) estimation in noisy environments, The shoulders of the Doppler spectrum might also help in solving the inverse problem, e.g., estimation of the velocity distribution in vessels.
引用
收藏
页码:649 / 662
页数:14
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