scholarly journals A Parallel Mode Optimized GPU Accelerated Monte Carlo Model for Light Propagation in 3-D Voxelized Bio-Tissues

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 81593-81598
Author(s):  
Xiang Fang ◽  
Hao Li ◽  
Weichao Liu ◽  
Yingxin Li ◽  
Ting Li
Keyword(s):  
Monte Carlo ◽  
Light Propagation ◽  
Monte Carlo Model ◽  
Parallel Mode

scholarly journals Veins Depth Estimation Using Diffused Reflectance Parameter

2020 ◽  
Vol 10 (22) ◽  
pp. 8238
Author(s):  
Rab Nawaz Jadoon ◽  
Aamir Shahzad ◽  
Syed Ayaz Ali Shah ◽  
Muhammad Amir Khan ◽  
Tallha Akram ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Light Propagation ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Monte Carlo Model ◽  
Depth Estimation ◽  
Operating Conditions ◽  
Mathematical Representation ◽  
Depth Information ◽  
Optical Parameters

In order to perform the standard Intravenous (IV) catheterization, subcutaneous veins must be localized. It is a difficult task, especially in the cases when veins are hard to localize. The factors which affect the veins localization process are the physiological characteristics of patients, mainly darker skin tone, scars, hair, dehydration and low blood pressure. With the help of Near Infrared imaging, subcutaneous veins can be envisioned. This is due to the higher absorption of NIR light energy by Hemoglobin (Hb) found in the veins. Besides a superficial view, the veins depth information is also important in order to avoid their rupture by piercing through the walls during IV catheterization process. Diffused reflectance, measured with a camera sensor, can be used for the depth estimation of blood vessels. In this paper, a method to measure the depth of veins using diffused reflectance parameter, is presented. The well-known Monte Carlo model of light propagation in human tissues is used for the mathematical representation. A four-layered skin model is presented with varying vessel depths to describe the diffused reflectance of light while propagating inside skin tissues. The results are validated with Monte Carlo simulations for light propagation in layered medium. A sensitivity analysis of proposed method is also performed with a 5% alteration in the optical parameters of skin due to the change in operating conditions. The results showed a marginal error of maximum value 6.23% in vessel depth estimation using the standard optical parameters, 1.6% for −5% and 10.74% for +5% change in optical parameters.

scholarly journals Comparative evaluations of the Monte Carlo-based light propagation simulation packages for optical imaging

2017 ◽  
Vol 11 (01) ◽  
pp. 1750017 ◽  
Author(s):  
Lin Wang ◽  
Shenghan Ren ◽  
Xueli Chen
Keyword(s):  
Monte Carlo ◽  
Light Propagation ◽  
Monte Carlo Model ◽  
Light Transport ◽  
Optical Simulation ◽  
Simulation Environment ◽  
Software Packages ◽  
Heterogeneous Structures ◽  
Mc Simulation ◽  
Comparative Results

Monte Carlo simulation of light propagation in turbid medium has been studied for years. A number of software packages have been developed to handle with such issue. However, it is hard to compare these simulation packages, especially for tissues with complex heterogeneous structures. Here, we first designed a group of mesh datasets generated by Iso2Mesh software, and used them to cross-validate the accuracy and to evaluate the performance of four Monte Carlo-based simulation packages, including Monte Carlo model of steady-state light transport in multi-layered tissues (MCML), tetrahedron-based inhomogeneous Monte Carlo optical simulator (TIMOS), Molecular Optical Simulation Environment (MOSE), and Mesh-based Monte Carlo (MMC). The performance of each package was evaluated based on the designed mesh datasets. The merits and demerits of each package were also discussed. Comparative results showed that the TIMOS package provided the best performance, which proved to be a reliable, efficient, and stable MC simulation package for users.

A Monte Carlo model for incoherent light propagation in human skin.

2008 ◽  
Author(s):  
Jorge Carlos González Trujillo ◽  
José Ángel Méndez Gamboa ◽  
Mario Pérez Cortes
Keyword(s):  
Monte Carlo ◽  
Human Skin ◽  
Light Propagation ◽  
Monte Carlo Model ◽  
Incoherent Light

Monte Carlo model for describing charge transfer in irradiated CCDs

1998 ◽  
Author(s):  
Dennis J. Gallagher ◽  
Raymond Demara ◽  
Gary Emerson ◽  
Wayne W. Frame ◽  
Alan W. Delamere
Keyword(s):  
Monte Carlo ◽  
Charge Transfer ◽  
Monte Carlo Model

Monte Carlo model of multi-site adsorption

1985 ◽  
Vol 8 (7) ◽  
pp. 364-365 ◽  
Author(s):  
J. Sedláček ◽  
L. Nondek
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Model
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