Document Detail


Computer-optimization of vascular trees.
MedLine Citation:
PMID:  8225337     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Arterial branchings closely fulfill several "bifurcation rules" which are deemed to optimize blood flow. The question is whether these local criteria in conjunction with a general optimization principle can explain the overall structure of an arterial tree. We present a model of an arterial vascular tree which is grown on the computer by successively adding terminal vessel segments. Each new terminal segment is connected to the optimum site within the preexisting tree, and the new bifurcation is optimized geometrically. After each step of adding and optimizing, the whole tree is rescaled to meet invariant boundary conditions of pressure and flow at each terminal site. Thus, local geometric optimization is used to induce simultaneously an optimized global structure. The comparison between the model and real coronary arterial trees shows good agreement regarding structural appearance, morphometric parameters, and pressure profiles.
Authors:
W Schreiner; P F Buxbaum
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  40     ISSN:  0018-9294     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  1993 May 
Date Detail:
Created Date:  1993-12-09     Completed Date:  1993-12-09     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:  482-91     Citation Subset:  IM    
Affiliation:
2nd Department of Surgery, University of Vienna, Wien, Austria.
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MeSH Terms
Descriptor/Qualifier:
Arteries / anatomy & histology*,  physiology
Blood Flow Velocity
Blood Pressure
Computer Simulation*
Coronary Vessels / anatomy & histology,  physiology
Evaluation Studies as Topic
Humans
Mathematics
Models, Cardiovascular*
Vascular Resistance

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


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