Document Detail

Automated multiscale vessel analysis for the quantification of MR angiography of peripheral arteriogenesis.
MedLine Citation:
PMID:  22045502     Owner:  NLM     Status:  Publisher    
PURPOSE: To automatically analyze the time course of collateralization in a rat hindlimb ischemia model based on signal intensity distribution (SID). MATERIALS AND METHODS: Time-of-flight magnetic resonance angiograms (TOF-MRA) were acquired in eight rats at 2, 7, and 21 days after unilateral femoral artery ligation. Analysis was performed on maximum intensity projections filtered with multiscale vessel enhancement filter. Differences in SID between ligated limb and a reference region were monitored over time and compared to manual collateral artery identification. RESULTS: The differences in SID correlated well with the number of collateral arteries found with manual quantification. The time courses of ultrasmall (diameter ≪0.5 mm) and small (diameter ≈0.5 mm) collateral artery development could be differentiated, revealing that maturation of the collaterals and enlargement of their feeding arteries occurred mainly after the first week postligation. CONCLUSION: SID analysis performed on axial maximum intensity projections is easy to implement, fast, and objective and provides more insight in the time course of arteriogenesis than manual identification. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc.
Karolien Jaspers; Jos M G M Slenter; Tim Leiner; Allard Wagenaar; Mark J Post; Walter H Backes
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-1
Journal Detail:
Title:  Journal of magnetic resonance imaging : JMRI     Volume:  -     ISSN:  1522-2586     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9105850     Medline TA:  J Magn Reson Imaging     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Wiley-Liss, Inc.
Cardiovascular Research Institute Maastricht, Maastricht, Netherlands; Radiology, Maastricht University Medical Centre, Maastricht, Netherlands.
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