Pulse decomposition-based analysis of PAT/TAT error caused by negative lobes in limited-view conditions
Pulse decomposition-based analysis of PAT/TAT error caused by negative lobes in limited-view conditions
复制标题
基于脉冲分解的有限视野条件下负瓣引起的 PAT/TAT 误差分析
DOI:
10.1088/1674-1056/24/2/024304
复制
发表时间:
2015-02
影响因子:
1.7
通讯作者:
Zhang Hai-Tao
中科院分区:
文献类型:
--
作者:
Tao Chao;Liu Xiao-Jun;Li Xian-Li;Zhang Hai-Tao
Pulse decomposition has been proven to be efficient to analyze complicated signals and it is introduced into the photo-acoustic and thermo-acoustic tomography to eliminate reconstruction distortions caused by negative lobes. During image reconstruction, negative lobes bring errors in the estimation of acoustic pulse amplitude, which is closely related to the distribution of absorption coefficient. The negative lobe error degrades imaging quality seriously in limited-view conditions because it cannot be offset so well as in full-view conditions. Therefore, a pulse decomposition formula is provided with detailed deduction to eliminate the negative lobe error and is incorporated into the popular delay-and-sum method for better reconstructing the image without additional complicated computation. Numerical experiments show that the pulse decomposition improves the image quality obviously in the limited-view conditions, such as separating adjacent absorbers, discovering a small absorber despite disturbance from a big absorber nearby, etc.
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DOI:
10.1086/317364
发表时间:
2000-02
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
A. Lee;E. Bloom;V. Petrosian
通讯作者:
A. Lee;E. Bloom;V. Petrosian
影响因子:
1.6
作者:
Xu Xiao
通讯作者:
Xu Xiao
影响因子:
3.4
作者:
Yao L;Jiang H
通讯作者:
Jiang H
影响因子:
4.2
作者:
Yan Zhang;Yuanyuan Wang;Chen Zhang
通讯作者:
Yan Zhang;Yuanyuan Wang;Chen Zhang
DOI:
10.1016/j.isprsjprs.2005.12.001
发表时间:
2006-04-01
影响因子:
12.7
作者:
Wagner, W;Ullrich, A;Studnicka, N
通讯作者:
Studnicka, N