Document Detail


Ultrasound scattering from blood with hematocrits up to 100%.
MedLine Citation:
PMID:  8200673     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The backscattering coefficient of saline suspensions of porcine red blood cells was measured for hematocrits up to about 90%. It was found that the coefficient peaks at approximately 15%, but then, contrary to what a simple "gap theory" might suggest, it decays smoothly to zero, without showing another peak at high hematocrits. A one-dimensional (1-D) slab scattering model, in which the number of slabs per unit length represents the hematocrit and whose thickness and acoustical properties are similar to red cells/plasma, was also used to investigate the relation between the backscattered power and hematocrit. Monte-Carlo simulations performed for randomized boundary conditions show a similar relation to that of the 3-D system. The experimental data is compared to the Percus-Yevick theory for the packing of hard spheres, and the simulated data is compared to the Percus-Yevick theory for infinite slabs.
Authors:
L Y Mo; I Y Kuo; K K Shung; L Ceresne; R S Cobbold
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  41     ISSN:  0018-9294     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  1994 Jan 
Date Detail:
Created Date:  1994-07-07     Completed Date:  1994-07-07     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0012737     Medline TA:  IEEE Trans Biomed Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  91-5     Citation Subset:  IM    
Affiliation:
G. E. Medical Systems, Milwaukee, WI 53201.
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MeSH Terms
Descriptor/Qualifier:
Animals
Computer Simulation
Erythrocytes / ultrasonography*
Hematocrit*
Swine
Grant Support
ID/Acronym/Agency:
HL28452/HL/NHLBI NIH HHS

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


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