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Proceedings Paper

Measuring joint cartilage thickness using reflectance spectroscopy non-invasively and in real-time
Author(s): Murat Canpolat; Tuba Denkceken; Cosar Karagol; Ahmet T. Aydin
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Paper Abstract

Joint cartilage thickness has been estimated using spatially resolved steady-state reflectance spectroscopy noninvasively and in-real time. The system consists of a miniature UV-VIS spectrometer, a halogen tungsten light source, and an optical fiber probe with six 400 um diameter fibers. The first fiber was used to deliver the light to the cartilage and the other five were used to detect back-reflected diffused light. Distances from the detector fibers to the source fiber were 0.8 mm, 1.6 mm, 2.4 mm, 3.2 mm and 4 mm. Spectra of back-reflected diffused light were taken on 40 bovine patella cartilages. The samples were grouped into four; the first group was the control group with undamaged cartilages, in the 2nd, 3rd and 4th groups cartilage thickness was reduced approximately 25%, 50% and 100%, respectively. A correlation between cartilage thicknesses and hemoglobin absorption of light in the wavelength range of 500 nm- 600 nm for source-detector pairs was found. The proposed system with an optical fiber probe less than 4 mm in diameter has the potential for cartilage thickness assessment through an arthroscopy channel in real-time without damaging the cartilage.

Paper Details

Date Published: 21 February 2011
PDF: 6 pages
Proc. SPIE 7890, Advanced Biomedical and Clinical Diagnostic Systems IX, 789008 (21 February 2011); doi: 10.1117/12.876054
Show Author Affiliations
Murat Canpolat, Akdeniz Univ. (Turkey)
Tuba Denkceken, Akdeniz Univ. (Turkey)
Cosar Karagol, Akdeniz Univ. (Turkey)
Ahmet T. Aydin, Akdeniz Univ. (Turkey)

Published in SPIE Proceedings Vol. 7890:
Advanced Biomedical and Clinical Diagnostic Systems IX
Anita Mahadevan-Jansen; Tuan Vo-Dinh; Warren S. Grundfest, Editor(s)

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