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Proceedings Paper

Development of a continuous-wave dual-band trans-rectal optical tomography system for concurrent sagittal imaging with trans-rectal ultrasound
Author(s): Zhen Jiang; Hao Xie; Daqing Piao; Jerzy S. Krasinski
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Paper Abstract

A dual-band trans-rectal optical tomography system is constructed based on an endo-rectal near-infrared/ultrasound applicator that has been developed previously in our laboratory. The endo-rectal NIR/US applicator consists of a commercial bi-plane ultrasound and a NIR probe attached to the sagittal ultrasound transducer. The NIR probe consists of 7 illumination & 7 detection channels that are distributed in parallel to and aside the sagittal TRUS transducer. The emissions from a 780nm and an 830nm light sources are combined and delivered sequentially to the 7 NIR source channels of the endo-rectal NIR/US probe. The 7 NIR detection channels are coupled to a spectrometer for separation of the signals at two wavelengths illuminated from single source channel. The dual-band signals from all source channels are acquired sequentially by a CCD camera synchronized with the source switching. The acquisition of dual-band trans-rectal optical tomography data is accompanied by position-correlated concurrent trans-rectal ultrasound imaging. The reconstruction of a target at dual-wavelength illumination is guided by a priori spatial information provided by the sagittal trans-rectal ultrasound. Liquid phantoms with different hemoglobin concentration and oxygen saturation are used to test the feasibility of dual-band trans-rectal optical tomography.

Paper Details

Date Published: 20 February 2009
PDF: 10 pages
Proc. SPIE 7171, Multimodal Biomedical Imaging IV, 71710G (20 February 2009); doi: 10.1117/12.808232
Show Author Affiliations
Zhen Jiang, Oklahoma State Univ. (United States)
Hao Xie, Oklahoma State Univ. (United States)
Daqing Piao, Oklahoma State Univ. (United States)
Jerzy S. Krasinski, Oklahoma State Univ. (United States)

Published in SPIE Proceedings Vol. 7171:
Multimodal Biomedical Imaging IV
Fred S. Azar; Xavier Intes, Editor(s)

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