| Improvements in carotid plaque imaging using a new eight-element phased array coil at 3T. | |
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MedLine Citation:
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PMID: 19780187 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To design and compare an eight-channel phased array (PA) coil for carotid imaging to an established four-channel PA design at 3T. MATERIALS AND METHODS: An eight-channel PA (8PA) coil was designed specifically for imaging the carotid bifurcation and compared with the existing four-channel (4PA) design using a phantom and by in vivo black-blood magnetic resonance imaging (MRI). The 8PA and 4PA were compared in terms of coverage, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR). RESULTS: The 8PA showed up to 1.7-fold improvement in SNR at a depth of 3.5 cm and greater longitudinal coverage at a given SNR on a phantom. The 8PA showed improved vessel wall SNR for high spatial resolution (0.63 mm(2)) PD, T1, and T2 (1.7, 1.7, 1.6 times, respectively; P <or= 0.002) and improved CNR (1.7, 1.6, 1.5 times, respectively; P <or= 0.002). Ultrahigh-resolution (0.27 mm(2)) T1-weighted images showed better SNR and CNR (1.4 times, P <or= 0.0001) on 8PA compared to 4PA. CONCLUSION: Carotid imaging studies may benefit from the improved SNR and larger coverage provided by use of the 8PA. |
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Authors:
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Niranjan Balu; Vasily L Yarnykh; Joshua Scholnick; Baocheng Chu; Chun Yuan; Cecil Hayes |
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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: Journal of magnetic resonance imaging : JMRI Volume: 30 ISSN: 1522-2586 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-10-29 Completed Date: 2010-01-21 Revised Date: 2011-09-26 |
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: 1209-14 Citation Subset: IM |
Affiliation:
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Department of Radiology, University of Washington, Seattle, Washington, USA. ninja@u.washington.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Atherosclerosis / pathology* Carotid Arteries / pathology* Carotid Stenosis / pathology* Contrast Media / pharmacology Diagnostic Imaging / methods Female Humans Image Processing, Computer-Assisted / methods Magnetic Resonance Imaging / methods* Male Phantoms, Imaging |
| Grant Support | |
ID/Acronym/Agency:
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HL056784/HL/NHLBI NIH HHS; R01 HL056874-09/HL/NHLBI NIH HHS |
| 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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