| Hybrid of opposite-contrast MRA of the brain by combining time-of-flight and black-blood sequences: initial experience in major trunk stenoocclusive diseases. | |
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MedLine Citation:
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PMID: 20027573 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To assess the feasibility of a new MR angiography (MRA) technique named hybrid of opposite-contrast MRA (HOP MRA) that combined the time-of-flight (TOF) MRA with a flow-sensitive black-blood (FSBB) sequence in the diagnosis of major trunk stenoocclusive diseases. MATERIALS AND METHODS: On a 1.5 Tesla imager using a dual-echo three-dimensional (3D)-gradient-echo sequence, we obtained the first echo for TOF MRA followed by the second echo for FSBB. We then subtracted the FSBB data set from that of TOF MRA followed by maximum intensity projection. In four normal volunteers and 19 patients with chronic stenoocclusive disease of the major trunk, we performed HOP MRA along with 3D-TOF MRA and compared the findings. RESULTS: In the volunteer group, the HOP MRA technique improved the demonstration of distal arterial branches. In 12 of the 19 patients, the HOP MRA better visualized branches distal to the lesion as well as distal branches of normal trunks than 3D-TOF MRA, while both techniques provided equivalent depiction of branches distal to the lesion but better depiction of normal distal branches in three patients. CONCLUSION: The HOP-MRA technique is promising in major trunk stenoocclusive diseases as it better demonstrates distal branches probably representing collaterals than 3D-TOF MRA. |
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Authors:
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Kazuhiro Tsuchiya; Kuninori Kobayashi; Toshiaki Nitatori; Tokunori Kimura; Masato Ikedo; Shuhei Takemoto |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of magnetic resonance imaging : JMRI Volume: 31 ISSN: 1522-2586 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-12-28 Completed Date: 2010-03-10 Revised Date: - |
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: 56-60 Citation Subset: IM |
Copyright Information:
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(c) 2009 Wiley-Liss, Inc. |
Affiliation:
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Department of Radiology, Kyorin University Faculty of Medicine, Tokyo, Japan. tsuchiyak-kyr@umin.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Arterial Occlusive Diseases / diagnosis* Cerebrovascular Disorders / diagnosis* Contrast Media Female Humans Image Enhancement / methods Image Interpretation, Computer-Assisted / methods* Magnetic Resonance Angiography / methods* Male Middle Aged Peripheral Vascular Diseases / diagnosis* Pilot Projects Reproducibility of Results Sensitivity and Specificity Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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