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Journal of Biomedical Optics

Computational model to evaluate port wine stain depth profiling using pulsed photothermal radiometry
Author(s): Bernard Choi; Boris Majaron; John Stuart Nelson
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Paper Abstract

We report on development of an optical-thermal model to evaluate the use of pulsed photothermal radiometry (PPTR) for depth profiling of port wine stain (PWS) skin. In the model, digitized histology sections of a PWS biopsy were used as the input skin geometry. Laser induced temperature profiles were reconstructed from simulated PPTR signals by applying an iterative, non-negatively constrained conjugate gradient algorithm. Accuracy of the following PWS skin characteristics extracted from the reconstructed profiles was determined: (1) average epidermal thickness (zepi), (2) maximum epidermal temperature rise (ΔTepi,max), (3) depth of PWS upper boundary (zPWS), and (4) depth of maximum PWS temperature rise (zPWS,max). Comparison of the actual and reconstructed profiles from PPTR data revealed a good match for all four PWS skin characteristics. Results of this study indicate that PPTR is a viable approach for depth profiling of PWS skin.

Paper Details

Date Published: 1 March 2004
PDF: 9 pages
J. Biomed. Opt. 9(2) doi: 10.1117/1.1646173
Published in: Journal of Biomedical Optics Volume 9, Issue 2
Show Author Affiliations
Bernard Choi, Univ. of California/Irvine (United States)
Boris Majaron, Institute Jozef Stefan (Slovenia)
John Stuart Nelson, Univ. of California/Irvine (United States)

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