Study on optical energy transmission in biotic tissues by Monte Carlo method / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 652-657, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-230811
ABSTRACT
Biotic tissues are a kind of highly scattering random media; studies on laser light propagation in biotic tissues play an important role in bio-medical diagnostics and therapeutics. The propagation and distribution of infinitely narrow photon beam in tissues are simulated by Monte Carlo method in this paper. Also presented are the energy distribution with regard to depths, light distribution in tissues, reflection and transmittance on the upper and lower surface. The optical parameters adopted in this study are g, albedo and microa, which have influence on energy distribution. The results show The energy distribution decreases more quickly with the increase of depths and reveals a peak value close to the surface; g factor plays an important part in the lost energy on the upper surface and lower surface; the decrease of g factor causes weaking of the forward moving ability, so the penetration depth becomes smaller and the energy becomes dispersives variation of albedo has distinct effect on the shallow and deep tissues.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Photochemotherapy
/
Scattering, Radiation
/
Computer Simulation
/
Monte Carlo Method
/
Energy Transfer
/
Optics and Photonics
/
Light
/
Methods
/
Models, Biological
Type of study:
Health economic evaluation
/
Prognostic study
Language:
Chinese
Journal:
Journal of Biomedical Engineering
Year:
2010
Type:
Article
Similar
MEDLINE
...
LILACS
LIS