| Improved centric phase encoding orders for three-dimensional magnetization-prepared MR angiography. | |
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MedLine Citation:
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PMID: 8875408 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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New centric phase encoding orders are introduced for transient state three-dimensional MR imaging. Unlike previous centric orders, these variants are not fixed with respect to differences in the relative y and z fields of view, but are tailored to account for the, differential degrees of gradient dephasing in the Ky and Kz phase encoding directions and thus maintain the highest weighting for the most central k-space values. The new centric orders are compared with previous methods in both simulation and experimental magnetization-prepared MR angiography of the carotid and renal arteries. In comparison with other tested centric orders, the new methods provided better retention of true vessel shape caused by isotropic blurring across the phase encoding plane. In addition, the new methods provided increased contrast, with the degree of improvement over previous methods depending on vessel orientation, size, and degree of inflow. |
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Authors:
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A H Wilman; S J Riederer |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
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: 36 ISSN: 0740-3194 ISO Abbreviation: Magn Reson Med Publication Date: 1996 Sep |
Date Detail:
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Created Date: 1997-04-17 Completed Date: 1997-04-17 Revised Date: 2007-11-14 |
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: 384-92 Citation Subset: IM |
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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Brain
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anatomy & histology* Humans Image Processing, Computer-Assisted Magnetic Resonance Angiography* Magnetics* |
| Grant Support | |
ID/Acronym/Agency:
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CA37993/CA/NCI NIH HHS; HL37310/HL/NHLBI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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