| Efficient flow suppressed MRI improves interscan reproducibility of carotid atherosclerosis plaque burden measurements. | |
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MedLine Citation:
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PMID: 20677277 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To determine if better flow suppression can meaningfully improve the reproducibility of measurements associated with carotid atherosclerotic disease, particularly for lumen and wall areas. MATERIALS AND METHODS: Eighteen subjects with carotid artery stenosis identified by duplex ultrasound (11 with 16%-49% stenosis; 7 with 50%-79% stenosis) underwent two carotid magnetic resonance imaging (MRI) examinations on a 3T scanner with a 4-channel phased array coil. High-resolution intermediate-weighted TSE (TR/TE = 4000/8.5 msec, 0.55 mm in-plane resolution, 2 mm slice thickness, 16 slices, 3-minute scan time) with two different flow-suppression techniques (multislice double inversion recovery [mDIR] and motion-sensitized driven-equilibrium [MSDE]) were obtained separately. For each subject, bilateral arteries were reviewed. One radiologist blinded to timepoints, flow suppression techniques, and clinical information measured the arterial lumen area, wall area, and total vessel wall area. RESULTS: Compared to mDIR, the MSDE technique had a smaller interscan standard deviation (SD) in lumen (SD: 3.6 vs. 5.2 mm(2), P = 0.02), wall area measurements (SD: 4.5 vs. 6.4 mm(2), P = 0.02), and a trend towards smaller SD in total vessel area measurement (SD: 4.4 vs. 4.9 mm(2), P = 0.07). CONCLUSION: The results from this study demonstrate that vessel wall imaging could quantify atherosclerotic plaque measurements more reliably with an improved blood suppression technique. This relationship between flow-suppression efficiency and reproducibility of plaque measurements is important, as more reliable area measurements will be useful in clinical diagnosis and in serial MRI studies that monitor carotid atherosclerotic lesion progression and regression. |
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Authors:
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Li Dong; Jinnan Wang; Vasily L Yarnykh; Hunter R Underhill; Moni B Neradilek; Nayak Polissar; Thomas S Hatsukami; Chun Yuan |
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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: 32 ISSN: 1522-2586 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-02 Completed Date: 2010-11-24 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: 452-8 Citation Subset: IM |
Copyright Information:
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2010 Wiley-Liss, Inc. |
Affiliation:
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Department of Radiology, University of Washington, Seattle, Washington 98109, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Atherosclerosis / pathology Carotid Arteries / pathology* Carotid Artery Diseases / diagnosis*, pathology* Female Humans Image Processing, Computer-Assisted Magnetic Resonance Imaging / methods* Male Middle Aged Reproducibility of Results Ultrasonography / methods |
| Grant Support | |
ID/Acronym/Agency:
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HL56874/HL/NHLBI NIH HHS; R01 HL056874-13/HL/NHLBI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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