Document Detail

Dependence of light scattering profile in tissue on blood vessel diameter and distribution: a computer simulation study.
MedLine Citation:
PMID:  23887384     Owner:  NLM     Status:  MEDLINE    
Most methods for measuring light-tissue interactions focus on the volume reflectance while very few measure the transmission. We investigate both diffusion reflection and diffuse transmission at all exit angles to receive the full scattering profile. We also investigate the influence of blood vessel diameter on the scattering profile of a circular tissue. The photon propagation path at a wavelength of 850 nm is calculated from the absorption and scattering constants via Monte Carlo simulation. Several simulations are performed where a different vessel diameter and location were chosen but the blood volume was kept constant. The fraction of photons exiting the tissue at several central angles is presented for each vessel diameter. The main result is that there is a central angle that below which the photon transmission decreased for lower vessel diameters while above this angle the opposite occurred. We find this central angle to be 135 deg for a two-dimensional 10-mm diameter circular tissue cross-section containing blood vessels. These findings can be useful for monitoring blood perfusion and oxygen delivery in the ear lobe and pinched tissues.
Hamootal Duadi; Dror Fixler; Rachela Popovtzer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of biomedical optics     Volume:  18     ISSN:  1560-2281     ISO Abbreviation:  J Biomed Opt     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-07-26     Completed Date:  2014-02-04     Revised Date:  2014-07-07    
Medline Journal Info:
Nlm Unique ID:  9605853     Medline TA:  J Biomed Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  111408     Citation Subset:  IM    
Copyright Information:
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
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MeSH Terms
Blood Vessels / anatomy & histology*,  physiology*
Blood Volume
Computer Simulation
Models, Biological*
Monte Carlo Method
Scattering, Radiation*
Spectroscopy, Near-Infrared

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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