Research on the Near-Infrared (NIR) Photon Migration in the Knee

2013 ◽  
Vol 760-762 ◽  
pp. 388-391
Author(s):  
Yan Ping Chen ◽  
Xiong Ma ◽  
Chun Bin Li ◽  
Song Qing Chen

To study the phenomena of photon migration in the knee joint is very important in the field of non-invasive near-infrared optical early diagnosis of osteoarthritis of the knee (KOA). In this paper, a photon propagation model of the knee layered structure based on Monte Carlo method is proposed. The migration trace and distribution rule of the photons in knee layered structure are simulated by the Monte Carlo modeling. The proportion of photons which collide with bone tissue then migrate out of the muscle tissue and photons directly migrate out of muscle tissue is calculated and analyzed. The conclusion is that the MC method provided in this study is useful to analyze the photon migration in knee layered structure and to place the detector in a suitable position.

2014 ◽  
Vol 12 (s2) ◽  
pp. S21701-321704 ◽  
Author(s):  
Yanping Chen Yanping Chen ◽  
Xiong Ma Xiong Ma ◽  
Xiaoling Wang Xiaoling Wang ◽  
Shaojie Wang Shaojie Wang

Author(s):  
Dominika Jurovata ◽  
Julia Kurnatova ◽  
Sebastian Ley ◽  
Daniel Laqua ◽  
Pavel Vazan ◽  
...  

Abstract This paper deals with the light transport, photon trajectory and its radiation in tissue. A model based on Monte Carlo simulation has been implemented in Matlab to get inside into photon interaction with tissue. The project is aimed to non-invasive pulse oximetry measurement of fetal oxygen saturation in the maternal abdomen. One of the fundamental challenges is to ensure a sufficient penetration depth which covers maternal and fetal tissue. This contribution investigates the photon trajectories and analyse the number of photons which stayed in tissue and their radiation distribution. The principle and photon propagation rules, needed for simulation, are presented in this article. Finally the results are compared with literature.


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