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Proceedings Paper

Absolute near-infrared oximetry for urology: a quantitative study of the tissue hemoglobin saturation before and after testicular torsion in a rabbit model
Author(s): Bertan Hallacoglu; Richard S. Matulewicz; Harriet J. Paltiel; Horacio Padua; Patricio Gargollo; Glenn Cannon; Ahmad Alomari; Angelo Sassaroli; Sergio Fantini
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Paper Abstract

We present an experimental study on four rabbits to demonstrate the feasibility of near-infrared spectroscopy in the noninvasive assessment of testicular torsion. We used a multi-distance frequency-domain method, based on a fixed detector position and a 9-mm linear scan of the illumination optical fibers, to measure absolute values of pre- and post-operative testicular oxygen saturation. Unilateral testicular torsions (by 0°, 540° or 720°) on experimental testes and contralateral sham surgeries (no torsion) on control testes were performed and studied. Our results showed (a) a consistent baseline absolute tissue oxygen saturation value of 78% ± 5%; (b) a comparable absolute saturation of 77% ± 6% on the control side (testes after sham surgery); and (c) a significantly lower tissue oxygen saturation of 36% ± 2% on the experimental side (testes after 540° or 720° torsion surgery). These results demonstrate the capability of frequency domain nearinfrared spectroscopy in the assessment of absolute testicular hemoglobin desaturation caused by torsion, and show promise as a potential method to serve as a complement to conventional color and spectral Doppler ultrasonography.

Paper Details

Date Published: 23 February 2009
PDF: 6 pages
Proc. SPIE 7174, Optical Tomography and Spectroscopy of Tissue VIII, 71740L (23 February 2009); doi: 10.1117/12.809609
Show Author Affiliations
Bertan Hallacoglu, Tufts Univ. (United States)
Richard S. Matulewicz, Tufts Univ. (United States)
Harriet J. Paltiel, Children’s Hospital Boston (United States)
Horacio Padua, Children’s Hospital Boston (United States)
Patricio Gargollo, Children’s Hospital Boston (United States)
Glenn Cannon, Children’s Hospital Boston (United States)
Ahmad Alomari, Children’s Hospital Boston (United States)
Angelo Sassaroli, Tufts Univ. (United States)
Sergio Fantini, Tufts Univ. (United States)

Published in SPIE Proceedings Vol. 7174:
Optical Tomography and Spectroscopy of Tissue VIII
Bruce J. Tromberg; Arjun G. Yodh; Mamoru Tamura; Eva M. Sevick-Muraca; Robert R. Alfano, Editor(s)

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