New closed-form approximation for skin chromophore mapping

The concentrations of blood and melanin in skin can be estimated based on the reflectance of light. Many models for this estimation have been built, such as Monte Carlo simulation, diffusion models, and the differential modified Beer-Lambert law. The optimization-based methods are too slow for chrom...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Biomedical Optics 2011-04, Vol.16 (4), p.046012-046012
Main Authors: Valisuo, Petri, Alander, Jarmo T, Kaartinen, Ilkka, Tuchin, Valery V
Format: Article
Language:English
Subjects:
Algorithms
Blood
Blood Chemical Analysis
Chromophores
Computer Simulation
Diagnostic Imaging - methods
Diffusion
Hemoglobins - analysis
Hemoglobins - chemistry
Humans
Linear Models
Mathematical analysis
Mathematical models
Melanins - analysis
Melanins - chemistry
Models, Theoretical
Monte Carlo Method
Monte Carlo methods
Optics and Photonics
Oxyhemoglobins - analysis
Oxyhemoglobins - chemistry
Reproducibility of Results
Skin - chemistry
Spectrum Analysis - methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The concentrations of blood and melanin in skin can be estimated based on the reflectance of light. Many models for this estimation have been built, such as Monte Carlo simulation, diffusion models, and the differential modified Beer-Lambert law. The optimization-based methods are too slow for chromophore mapping of high-resolution spectral images, and the differential modified Beer-Lambert is not often accurate enough. Optimal coefficients for the differential Beer-Lambert model are calculated by differentiating the diffusion model, optimized to the normal skin spectrum. The derivatives are then used in predicting the difference in chromophore concentrations from the difference in absorption spectra. The accuracy of the method is tested both computationally and experimentally using a Monte Carlo multilayer simulation model, and the data are measured from the palm of a hand during an Allen's test, which modulates the blood content of skin. The correlations of the given and predicted blood, melanin, and oxygen saturation levels are correspondingly = 0.94, = 0.99, and = 0.73. The prediction of the concentrations for all pixels in a 1-megapixel image would take ∼20 min, which is orders of magnitude faster than the methods based on optimization during the prediction.
ISSN:1083-3668
1560-2281
DOI:10.1117/1.3562976