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Journal of Biomedical Optics

Laser optoacoustic imaging system for detection of breast cancer
Author(s): Sergey A. Ermilov; Tuenchit Khamapirad; André Conjusteau; Morton H. Leonard; Ron Lacewell; Ketan Mehta; Tom Miller; Alexander A. Oraevsky
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Paper Abstract

We designed, fabricated and tested the laser optoacoustic imaging system for breast cancer detection (LOIS-64), which fuses optical and acoustic imaging techniques in one modality by utilizing pulsed optical illumination and ultrawide-band ultrasonic detection of resulting optoacoustic (OA) signals. The system was designed to image a single breast slice in craniocaudal or mediolateral projection with an arc-shaped array of 64 ultrawide-band acoustic transducers. The system resolution on breast phantoms was at least 0.5 mm. The single-channel sensitivity of 1.66 mV/Pa was estimated to be sufficient for single-pulse imaging of 6 to 11 mm tumors through the whole imaging slice of the breast. The implemented signal processing using the wavelet transform allowed significant reduction of the low-frequency (LF) acoustic noise, allowed localization of the optoacoustic signals from tumors, and enhanced the contrast and sharpened the boundaries of the optoacoustic images of the tumors. During the preliminary clinical studies on 27 patients, the LOIS-64 was able to visualize 18 out of 20 malignant lesions suspected from mammography and ultrasound images and confirmed by the biopsy performed after the optoacoustic tomography (OAT) procedure.

Paper Details

Date Published: 1 March 2009
PDF: 14 pages
J. Biomed. Opt. 14(2) 024007 doi: 10.1117/1.3086616
Published in: Journal of Biomedical Optics Volume 14, Issue 2
Show Author Affiliations
Sergey A. Ermilov, Fairway Medical Technologies, Inc. (United States)
Tuenchit Khamapirad, The Univ. of Texas Medical Branch at Galveston (United States)
André Conjusteau, Fairway Medical Technologies, Inc. (United States)
Morton H. Leonard, The Univ. of Texas Medical Branch at Galveston (United States)
Ron Lacewell, Fairway Medical Technologies, Inc. (United States)
Ketan Mehta, Fairway Medical Technologies, Inc. (United States)
Tom Miller, Fairway Medical Technologies, Inc. (United States)
Alexander A. Oraevsky, Fairway Medical Technologies, Inc. (United States)


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