| Application of magnetization transfer at 3.0 T in three-dimensional time-of-flight magnetic resonance angiography of the intracranial arteries. | |
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MedLine Citation:
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PMID: 11948839 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To apply magnetization transfer (MT) at 3.0 T in three-dimensional time-of-flight magnetic resonance angiography of the intracranial arteries. MATERIALS AND METHODS: This study was performed on phantoms and seven volunteers to determine the effects of MT at 3.0 T. By using a modulated MT approach and an altered phase encode order, the specific absorption rate (SAR) was kept below 3 W/kg over any 8-second time period. RESULTS: For a 20-degree flip angle and 36 msec repetition time, the background suppression at 3.0 T was improved with MT by 52 +/- 5% for white matter and 40 +/- 8% for grey matter, making the distal intracranial vasculature significantly more discernible. CONCLUSIONS: MT at 3.0 T can significantly improve background suppression in 3D time-of-flight magnetic resonance angiography (MRA) of the intracranial arteries without exceeding SAR guidelines. |
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Authors:
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Steven D Thomas; Osama Al-Kwifi; Derek J Emery; Alan H Wilman |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of magnetic resonance imaging : JMRI Volume: 15 ISSN: 1053-1807 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2002 Apr |
Date Detail:
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Created Date: 2002-04-11 Completed Date: 2002-05-10 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 479-83 Citation Subset: IM |
Copyright Information:
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Copyright 2002 Wiley-Liss, Inc. |
Affiliation:
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Department of Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Cerebral Arteries / anatomy & histology* Humans Imaging, Three-Dimensional / methods* Magnetic Resonance Angiography / methods* Phantoms, Imaging |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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