Design of near-infrared imaging probe with the assistance of ultrasound localization

被引：29

作者：

Zhu, Q ^{[1
]}

Chen, NG ^{[1
]}

Piao, DQ ^{[1
]}

Guo, PY ^{[1
]}

Ding, XH ^{[1
]}

机构：

[1] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA

来源：

APPLIED OPTICS | 2001年 / 40卷 / 19期

关键词：

D O I：

10.1364/AO.40.003288

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A total of 364 optical source-detector pairs were deployed uniformly over a 9 cm x 9 cm probe area initially, and then the total pairs were reduced gradually to 60 in experimental and simulation studies. For each source-detector configuration, three-dimensional (3-D) images of a 1-cm-diameter absorber of different contrasts were reconstructed from the measurements made with a frequency-domain system. The results have shown that more than 160 source-detector pairs are needed to reconstruct the absorption coefficient to within 60% of the true value and appropriate spatial and contrast resolution. However, the error in target depth estimated from 3-D images was more than 1 cm in all source-detector configurations. With the a priori target depth information provided by ultrasound, the accuracy of the reconstructed absorption coefficient was improved by 15% and 30% on average, and the beam width was improved by 24% and 41% on average for high- and low-contrast cases, respectively. The speed of reconstruction was improved by ten times on average. (C) 2001 Optical Society of America.

引用

页码：3288 / 3303

页数：16

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