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Proceedings Paper

Development of tissue multi-slice laser reflectance imaging system
Author(s): J. Indumathi; Megha Singh
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Paper Abstract

For early detection of abnormalities growing within the healthy tissues a laser based multi-slice reflectance measurement technique is developed. The laser light is guided at the center of the probe. Around this the photo-detectors are arranged symmetrically at various distances from the beam entry point. The optical radiations after scattering within the tissue emerge at various locations which are detected by the detectors. After conversion from current to voltage these signals are digitized and fed to computer. After pre-processing of the backscattered signals from 36 photo-detectors arriving from various locations the reflectance images are reconstructed. As the detectors are placed at various distances from the beam entry point in the form of rings, their respective images are obtained. These multi-slices images provide variation in composition at various depths ranging from 2 - 7.5mm. Thus by placing the probe just once the required data for images reconstruction is obtained. This is in contrast to earlier developments as this does not involve the movement of the probe for image reconstruction. Based on the sequence of images from various depths a three - D image of the tissue structure could also be obtained.

Paper Details

Date Published: 22 August 2009
PDF: 6 pages
Proc. SPIE 7429, Novel Optical Systems Design and Optimization XII, 74290Z (22 August 2009); doi: 10.1117/12.826173
Show Author Affiliations
J. Indumathi, Vellore Institute of Technology Univ. (India)
Megha Singh, Vellore Institute of Technology Univ. (India)


Published in SPIE Proceedings Vol. 7429:
Novel Optical Systems Design and Optimization XII
R. John Koshel; G. Groot Gregory, Editor(s)

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