NDLI: Parallel MR Imaging with Accelerations Beyond the Number of Receiver Channels Using Real Image Reconstruction

Content Provider	IEEE Xplore Digital Library
Author	Ji, J.X. Wright, S.M.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. Eng., Texas A&M Univ., College Station, TX (Ji, J.X.; Wright, S.M.)
Abstract	Parallel imaging using multiple phased-array coils and receiver channels has become an effective approach to high-speed magnetic resonance imaging (MRI). To obtain high spatiotemporal resolution, the k-space is subsampled and later interpolated using multiple channel data. Higher subsampling factors result in faster image acquisition. However, the subsampling factors are upper-bounded by the number of parallel channels. Phase constraints have been previously proposed to overcome this limitation with some success. In this paper, we demonstrate that in certain applications it is possible to obtain acceleration factors potentially up to twice the channel numbers by using a real image constraint. Data acquisition and processing methods to manipulate and estimate of the image phase information are presented for improving image reconstruction. In-vivo brain MRI experimental results show that accelerations up to 6 are feasible with 4-channel data
Starting Page	735
Ending Page	738
File Size	401580
Page Count	4
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1616519
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acceleration Image reconstruction Magnetic resonance imaging Coils Data acquisition Phase estimation Magnetic resonance Laboratories High-resolution imaging Spatiotemporal phenomena rapid imaging MRI parallel imaging phased-array imaging constrained image reconstruction
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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