| Pulmonary vein inflow artifact reduction for free-breathing left atrium late gadolinium enhancement. | |
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MedLine Citation:
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PMID: 21360738 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two-dimensional "pencil-beam" navigator, placed on the right hemidiaphragm, is used for free-breathing late gadolinium enhancement of the left atrium in patients with atrial fibrillation. The pencil-beam navigator creates an inflow artifact in the right pulmonary veins and atrial wall that may obscure local pulmonary vein and left atrium scars. To reduce this artifact, we propose a large slab right hemidiaphragm projection navigator that measures the respiratory motion while reducing the associated inflow artifact. Eighteen subjects underwent pulmonary vein late gadolinium enhancement using the pencil-beam and projection navigator. Subjective inflow and respiratory motion artifact scores (1 = severe, 2 = moderate, 3 = mild, and 4 = none) from two blinded readers were compared. The artifact scores were 3.8 ± 0.4 and 2.1 ± 0.7 for the projection and pencil-beam navigators, respectively (P < 0.001). Respiratory motion artifact scores were similar between the two techniques (3.0 ± 0.5 vs. 3.1 ± 0.5 for projection vs. pencil-beam navigator). The proposed method greatly reduces the inflow artifact in free-breathing pulmonary vein late gadolinium enhancement while allowing adequate respiratory motion compensation. |
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Authors:
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Mehdi H Moghari; Dana C Peters; Jouke Smink; Lois Goepfert; Kraig V Kissinger; Beth Goddu; Thomas H Hauser; Mark E Josephson; Warren J Manning; Reza Nezafat |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2011-02-28 |
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: 66 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-06-22 Completed Date: 2011-12-19 Revised Date: 2012-09-19 |
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: 180-6 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Wiley-Liss, Inc. |
Affiliation:
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Department of Medicine, Cardiovascular Division, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Artifacts* Atrial Fibrillation / pathology, physiopathology Female Gadolinium* / metabolism Heart Atria / pathology* Humans Imaging, Three-Dimensional / methods Magnetic Resonance Angiography / methods* Male Middle Aged Pulmonary Veins / pathology* Respiration |
| Grant Support | |
ID/Acronym/Agency:
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R01 EB008743-02/EB/NIBIB NIH HHS; R01 EB008743-04/EB/NIBIB NIH HHS; R01EB008743-01A2/EB/NIBIB NIH HHS; UL1 RR025758-01/RR/NCRR NIH HHS |
| Chemical | |
Reg. No./Substance:
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7440-54-2/Gadolinium |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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