Journal ArticleDOI
Depth visualization of a local blood region in skin tissue by use of diffuse reflectance images
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TLDR
A simple method is proposed for visualizing the depth distribution of a local blood region in skin tissue by using diffuse reflectance images at two isosbestic wavelengths of hemoglobin, 420 and 585 nm.Abstract:
A simple method is proposed for visualizing the depth distribution of a local blood region in skin tissue by using diffuse reflectance images at two isosbestic wavelengths of hemoglobin, 420 and 585 nm. Monte Carlo simulation of light transport specifies a relation between optical densities and the depth of the region under given concentrations of melanin in the epidermis and blood in the dermis. Phantom and in vivo experiments were performed to show the usefulness of the method.read more
Citations
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Journal ArticleDOI
Monte Carlo Simulation of Spectral Reflectance Using a Multilayered Skin Tissue Model
TL;DR: In this paper, a nine-layered skin tissue model was developed for the Monte Carlo simulation of spectral reflectance, and the derivation of the necessary parameters for each of the nine layers in the simulation was presented, in which the parameters used in the conventional three-layer model were modified on the basis of some histological findings on skin and reported examples.
Journal ArticleDOI
Visualizing depth and thickness of a local blood region in skin tissue using diffuse reflectance images
TL;DR: A method is proposed for visualizing the depth and thickness distribution of a local blood region in skin tissue using diffuse reflectance images at three isosbestic wavelengths of hemoglobin: 420, 585, and 800 nm, which indicates that a simple circular blood region embedded in scattering media can be visualized with errors within errors.
Journal ArticleDOI
Thermal imaging of a vein of the forearm: Analysis and thermal modelling
TL;DR: In this article, the authors presented a basic thermal model explaining the temperature at the surface of the skin in the presence of sources such as veins, and proposed to analyse the infrared images obtained after thermal solicitation.
Journal ArticleDOI
Multispectral method for skin imaging: development and validation
Tianchen Shi,Charles A. DiMarzio +1 more
TL;DR: A visible wide field multispectral system for comprehensive imaging of skin chromophores and blood vessels has been implemented, and an inhomogeneous Monte Carlo model of photon migration with randomly distributed blood vessels embedded in dermis has been developed.
Journal ArticleDOI
Subcutaneous veins depth measurement using diffuse reflectance images
TL;DR: An imaging system that employs diffuse reflectance images at three isosbestic wavelengths to measure both the depth and thickness of subcutaneous veins to validate the system's applicability.
References
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MCML-Monte Carlo modeling of light transport in multi-layered tissues
TL;DR: A Monte Carlo model of steady-state light transport in multi-layered tissues (MCML) has been coded in ANSI Standard C; therefore, the program can be used on various computers and has been in the public domain since 1992.
Journal ArticleDOI
MCML—Monte Carlo modeling of light transport in multi-layered tissues
TL;DR: A Monte Carlo model of steady-state light transport in multi-layered tissues (MCML) has been coded in ANSI Standard C; therefore, the program can be used on various computers as mentioned in this paper.
Proceedings ArticleDOI
Internal absorption coefficient and threshold for pulsed laser disruption of melanosomes isolated from retinal pigment epithelium
TL;DR: In this paper, the authors determine the threshold radiant exposure from a 10ns pulsed laser (532 nm) which caused bovine melanosomes to present various observable endpoints of disruption.
Journal ArticleDOI
Estimation of melanin and hemoglobin in skin tissue using multiple regression analysis aided by Monte Carlo simulation
TL;DR: A method using a multiple regression analysis aided by a Monte Carlo simulation for diffuse reflectance spectra from the skin tissue to estimate the concentrations of melanin and blood and the oxygen saturation in human skin tissue was proposed.
Journal ArticleDOI
Optoacoustic tomography using time-resolved interferometric detection of surface displacement
TL;DR: A system that utilizes a time-resolved high-resolution interferometer capable of angstrom-level displacement resolution and nanosecond temporal resolution to detect subsurface blood vessels within model tissue phantoms and a human forearm in vivo is presented.