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Proceedings Paper

Near-infrared probe design with ultrasound guidance
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Paper Abstract

A total of 364 optical source-detector pairs were uniformly deployed over a 9 x 9 cm2 probe area initially, and then the total pairs were gradually reduced to 60 in experimental studies. For each source-detector configuration, 3D images of a 1 cm diameter absorber of different contrasts were reconstructed form the measurements made with a frequency domain system. The results have shown that more than 160 source-detector pairs are needed to reconstruct absorption coefficient within 60% of the true value and appropriate spatial and contrast resolution. However, the error in target depth estimated from 3D 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 has been improved by 15% and 3% on average for high and low contrast cases, respectively. The speed of reconstruction has been improved by 10 times on average.

Paper Details

Date Published: 15 June 2001
PDF: 12 pages
Proc. SPIE 4256, Biomedical Optoacoustics II, (15 June 2001); doi: 10.1117/12.429313
Show Author Affiliations
Quing Zhu, Univ. of Connecticut (United States)
Nanguang Chen, Univ. of Connecticut (United States)
Daqing Piao, Univ. of Connecticut (United States)
Puyun Guo, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 4256:
Biomedical Optoacoustics II
Alexander A. Oraevsky, Editor(s)

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