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Proceedings Paper

Three-element phased arrays to enhance the spatial resolution and achieve depth discrimination in diffuse optical imaging
Author(s): Ning Liu; Angelo Sassaroli; Max Zucker; Sergio Fantini
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Paper Abstract

We present a phased-array approach to diffuse optical imaging that is based on collecting continuous wave (CW) data using multiple sources and/or multiple detectors. The optical signals corresponding to individual source-detector pairs are combined by post processing after assigning individual amplitude and phase factors. Here, we demonstrate the enhancement in spatial resolution and the depth discrimination afforded by three-element linear phased arrays, either as stand alone units or in a 2-D crossed configuration. In this particular example, the (amplitude, phase) factors associated with the three array elements are (1,0), (2,π), (1,0), respectively. Experimental results on tissue like phantoms demonstrate the potential of the proposed source/detector arrays to enhance the performance of diffuse optical imaging.

Paper Details

Date Published: 28 April 2005
PDF: 6 pages
Proc. SPIE 5693, Optical Tomography and Spectroscopy of Tissue VI, (28 April 2005); doi: 10.1117/12.588426
Show Author Affiliations
Ning Liu, Tufts Univ. (United States)
Angelo Sassaroli, Tufts Univ. (United States)
Max Zucker, Tufts Univ. (United States)
Sergio Fantini, Tufts Univ. (United States)

Published in SPIE Proceedings Vol. 5693:
Optical Tomography and Spectroscopy of Tissue VI
Britton Chance; Robert R. Alfano; Bruce J. Tromberg; Mamoru Tamura; Eva M. Sevick-Muraca, Editor(s)

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