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TECHNICAL INNOVATION
Year : 2012  |  Volume : 2  |  Issue : 1  |  Page : 31

Echo Planar Diffusion-Weighted Imaging: Possibilities and Considerations with 12- and 32-Channel Head Coils


1 Scott and White Hospital/Texas A&M HSC, USA
2 University of Missouri Kansas City/St. Luke's Hospital, USA
3 Tongji Hospital, Huazhong University of Science and Technology, China
4 Cancer Center of SUN YAT SEN University, China

Correspondence Address:
John N Morelli
Scott and White Hospital, Texas A and M HSC, 2401 S 31st Street, Temple, TX 76508
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2156-7514.96548

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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.


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