Document Detail


Echo planar diffusion-weighted imaging: possibilities and considerations with 12- and 32-channel head coils.
MedLine Citation:
PMID:  22754745     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Interest in clinical brain magnetic resonance imaging using 32-channel head coils for signal reception continues to increase. The present investigation assesses possibilities for improving diffusion-weighted image quality using a 32-channel in comparison to a conventional 12-channel coil. The utility of single-shot (ss) and an approach to readout-segmented (rs) echo planar imaging (EPI) are examined using both head coils. Substantial image quality improvements are found with rs-EPI. Imaging with a 32-channel head coil allows for implementation of greater parallel imaging acceleration factors or acquisition of scans at a higher resolution. Specifically, higher resolution imaging with rs-EPI can be achieved by increasing the number of readout segments without increasing echo-spacing or echo time to the degree necessary with ss-EPI - a factor resulting in increased susceptibility artifact and reduced signal-to-noise with the latter.
Authors:
John N Morelli; Megan R Saettele; Rajesh A Rangaswamy; Lan Vu; Clint M Gerdes; Wei Zhang; Fei Ai
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Publication Detail:
Type:  Journal Article     Date:  2012-05-23
Journal Detail:
Title:  Journal of clinical imaging science     Volume:  2     ISSN:  2156-5597     ISO Abbreviation:  J Clin Imaging Sci     Publication Date:  2012  
Date Detail:
Created Date:  2012-07-03     Completed Date:  2012-10-02     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  101564708     Medline TA:  J Clin Imaging Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  31     Citation Subset:  -    
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