Monte Carlo simulation for the description of light transport in the cerebral zone for a human brain

 

A. R. Latrous1*, S. Bouzid2  

1Superior Normal School of Constantine, Institute of Electronics, research unit, Laboratory of Lasers and Applications,

PB 125, Chalet des pins, Constantine 25000, Algeria

2University of Constantine, Faculty of Medicine, research unit, Laboratory of Lasers and Applications, PB 125,

Chalet des pins, Constantine 25000, Algeria

* Corresponding author. E-mail: l.redha@voila.fr

Received: 08 October 2007; revised version accepted: 30 January 2009

 

Abstract

     The goal of our work consists in using numerical simulation method (Monte Carlo) in stationary mode which is used to identify the transport of energy of the photons in the strongly diffusing cerebral zone for a human brain. We suppose that the structure is cylindrical and is formed of only one layer. The bench of experimentation uses an ultra pulsed laser of femtosecond type emitting in the near infrared NIR at 800nm wavelength. In the simulation, we have used the experimental results, the absorption and scattering coefficients respectively ma and ms. We followed the path of the random walker, and then we record for each event at the exit of the program the fluence, the reflectance, the transmittance and the number of photons according to the space and temporal positions.  

 

Keywords: Cerebral zone; Monte Carlo simulation; Fluence; Reflectance; Transmittance; Number of photons.

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