| A new T2 preparation technique for ultrafast gradient-echo sequence. | |
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MedLine Citation:
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PMID: 7808267 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The T2 contrast in images obtained with driven equilibrium (90degreesx-180degreesx-90degreesx) prepared ultrafast gradient-echo sequence is compromised by the longitudinal magnetization build-up after the second 90degreesx pulse, which does not carry T2 information. This paper describes a new T2 contrast preparation technique for ultrafast gradient-echo sequence that suppresses the signal arising from the build-up. By dephasing in the preparation and rephasing in the acquisition of the gradient echoes, the new technique eliminates signals that are not dictated by the T2 contrast in a driven-equilibrium approach. Consequently, it generates an image that is essentially T2-weighted. Phantom and in vivo experiments were conducted to validate the technique and to demonstrate its clinical utility. These studies indicate that the technique works properly and can be used for in vivo studies. |
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Authors:
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T Parrish; X Hu |
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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: 32 ISSN: 0740-3194 ISO Abbreviation: Magn Reson Med Publication Date: 1994 Nov |
Date Detail:
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Created Date: 1995-02-02 Completed Date: 1995-02-02 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: 652-7 Citation Subset: IM |
Affiliation:
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Department of Radiology, University of Minnesota, Minneapolis. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Artifacts Brain / anatomy & histology Contrast Media Dogs Electrocardiography Gadolinium / diagnostic use Gadolinium DTPA Heart / anatomy & histology Humans Image Enhancement / methods* Magnetic Resonance Imaging / methods* Magnetics Models, Structural Organometallic Compounds / diagnostic use Pentetic Acid / analogs & derivatives, diagnostic use Reproducibility of Results Signal Processing, Computer-Assisted |
| Grant Support | |
ID/Acronym/Agency:
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RR 08079/RR/NCRR NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 0/Organometallic Compounds; 67-43-6/Pentetic Acid; 7440-54-2/Gadolinium; 80529-93-7/Gadolinium DTPA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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