| Fast inversion recovery magnetic resonance angiography of the intracranial arteries. | |
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MedLine Citation:
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PMID: 20512868 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Inversion-prepared pulse sequences can be used for noncontrast MR angiography (MRA) but suffer from long scan times when acquired using conventional nonaccelerated techniques. This work proposes a subtraction-based spin-labeling, three-dimensional fast inversion recovery MRA (FIR-MRA) method for imaging the intracranial arteries. FIR-MRA uses alternating cycles of nonselective and slab-selective inversions, leading to dark-blood and bright-blood images, respectively. The signal difference between these images eliminates static background tissue and generates the angiogram. To reduce scan time, segmented fast gradient recalled echo readout and parallel imaging are applied. The inversion recovery with embedded self-calibration method used allows for parallel acceleration at factors of 2 and above. An off-resonance selective inversion provides effective venous suppression, with no detriment to the depiction of arteries. FIR-MRA was compared against conventional three-dimensional time-of-flight angiography at 3 T in eight normal subjects. Results showed that FIR-MRA had superior vessel conspicuity in the distal vessels (P < 0.05), and equal or better vessel continuity and venous suppression. However, FIR-MRA had inferior vessel sharpness (P < 0.05) in four of nine vessel groups. The clinical utility of FIR-MRA was demonstrated in three MRA patients. |
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Authors:
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Ek T Tan; John Huston; Norbert G Campeau; Stephen J Riederer |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: 63 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-05-31 Completed Date: 2010-09-23 Revised Date: 2011-07-28 |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
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Languages: eng Pagination: 1648-58 Citation Subset: IM |
Copyright Information:
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(c) 2010 Wiley-Liss, Inc. |
Affiliation:
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MR Research Laboratory, Mayo Clinic, Rochester, Minnesota 55905, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Angiography, Digital Subtraction Cerebral Arteries / radiography* Female Humans Intracranial Aneurysm / diagnosis* Magnetic Resonance Angiography* / methods Male Reference Standards Spin Labels |
| Grant Support | |
ID/Acronym/Agency:
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EB000212/EB/NIBIB NIH HHS; HL070620/HL/NHLBI NIH HHS; R01 EB000212-23/EB/NIBIB NIH HHS; R01 HL070620-06/HL/NHLBI NIH HHS; R01 HL070620-07/HL/NHLBI NIH HHS; RR018898/RR/NCRR NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Spin Labels |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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