Document Detail


Vessel contrast at three Tesla in time-of-flight magnetic resonance angiography of the intracranial and carotid arteries.
MedLine Citation:
PMID:  12034339     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effects of the increased field strength of 3T on blood vessel contrast in three-dimensional time-of-flight (TOF) MR angiography (MRA) of the intracranial and carotid arteries was evaluated. Bloch equation simulations based on measured longitudinal relaxation times suggested superior blood-to-background contrast might be expected at 3T over 1.5T when using typical 3D TOF MRA parameters. A 15-volunteer study found that 3T was preferable over 1.5T for visualising distal intracranial vessels and the carotid arteries, by providing superior background suppression and excellent fat suppression. The combination of improved background suppression and improved signal-to-noise at 3T, enabled high resolution intracranial 3D TOF MRA with voxel volumes as small as 0.14 mm(3) to be acquired.
Authors:
Osama Al-Kwifi; Derek J Emery; Alan H Wilman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Magnetic resonance imaging     Volume:  20     ISSN:  0730-725X     ISO Abbreviation:  Magn Reson Imaging     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-05-29     Completed Date:  2002-07-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8214883     Medline TA:  Magn Reson Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  181-7     Citation Subset:  IM    
Affiliation:
Departments of Biomedical Engineering, and Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Canada T6G 2G3.
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MeSH Terms
Descriptor/Qualifier:
Adult
Carotid Arteries / anatomy & histology*
Circle of Willis / anatomy & histology*
Humans
Magnetic Resonance Angiography*
Time Factors

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


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