Share Email Print
cover

Journal of Biomedical Optics • Open Access

Monte Carlo modeling of light-tissue interactions in narrow band imaging

Paper Abstract

Light-tissue interactions that influence vascular contrast enhancement in narrow band imaging (NBI) have not been the subject of extensive theoretical study. In order to elucidate relevant mechanisms in a systematic and quantitative manner we have developed and validated a Monte Carlo model of NBI and used it to study the effect of device and tissue parameters, specifically, imaging wavelength (415 versus 540 nm) and vessel diameter and depth. Simulations provided quantitative predictions of contrast-including up to 125% improvement in small, superficial vessel contrast for 415 over 540 nm. Our findings indicated that absorption rather than scattering-the mechanism often cited in prior studies-was the dominant factor behind spectral variations in vessel depth-selectivity. Narrow-band images of a tissue-simulating phantom showed good agreement in terms of trends and quantitative values. Numerical modeling represents a powerful tool for elucidating the factors that affect the performance of spectral imaging approaches such as NBI.

Paper Details

Date Published: 13 December 2012
PDF: 4 pages
J. Biomed. Opt. 18(1) 010504 doi: 10.1117/1.JBO.18.1.010504
Published in: Journal of Biomedical Optics Volume 18, Issue 1
Show Author Affiliations
Du V. N. Le, U.S. Food and Drug Administration (United States)
Quanzeng Wang, U.S. Food and Drug Administration (United States)
Jessica C. Ramella-Roman, The Catholic Univ. of America (United States)
T. Joshua Pfefer, U.S. Food and Drug Administration (United States)


© SPIE. Terms of Use
Back to Top