| Validation of diffusion tensor MRI-based muscle fiber tracking. | |
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MedLine Citation:
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PMID: 12111936 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Diffusion-tensor (DT) MRI fiber tracking may potentially be used for in vivo structural analysis. The purpose of this study was to assess quantitatively the ability of a DT-MRI fiber-tracking algorithm to measure the fiber orientation (pennation) in skeletal muscle in vivo. In five adult Sprague-Dawley rats, the pennation angle (theta) was measured in the rat lateral gastrocnemius with DT-MRI (theta(DT-MRI)) and by direct anatomical inspection (DAI) (theta(DAI)). The mean theta(DT-MRI) was not significantly different from the mean theta(DAI). In addition, the two methods were highly correlated (r = 0.89) and the regression of theta(DT-MRI) on theta(DAI) resulted in a slope not significantly different from 1 and an intercept not significantly different from zero. These data indicate that DT-MRI-based fiber tracking as implemented here is a valid tool for in vivo structural analysis of small-animal skeletal muscle. |
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Authors:
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Bruce M Damon; Zhaohua Ding; Adam W Anderson; Andrea S Freyer; John C Gore |
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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: 48 ISSN: 0740-3194 ISO Abbreviation: Magn Reson Med Publication Date: 2002 Jul |
Date Detail:
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Created Date: 2002-07-11 Completed Date: 2002-09-17 Revised Date: 2008-11-21 |
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: 97-104 Citation Subset: IM |
Copyright Information:
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Copyright 2002 Wiley-Liss, Inc. |
Affiliation:
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Department of Diagnostic Radiology, Yale School of Medicine, New Haven, Connecticut 06520-8042, USA. bdamon@boreas.med.yale.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Magnetic Resonance Imaging / methods* Muscle Fibers, Skeletal / cytology* Muscle, Skeletal / cytology* Rats Rats, Sprague-Dawley |
| Grant Support | |
ID/Acronym/Agency:
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F32 AR08614/AR/NIAMS NIH HHS; NS34834/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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