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Locally sparsified compressive sensing in magnetic resonance imaging

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posted on 2015-01-01, 00:00 authored by Saeid Nahavandi, F A Razzaq, Shady MohamedShady Mohamed, Asim BhattiAsim Bhatti, P Brotchie
Magnetic Resonance Imaging (MRI) is a widely used technique for acquiring images of human organs/tissues. Due to its complex imaging process, it consumes a lot of time to produce a high quality image. Compressive Sensing (CS) has been used by researchers for rapid MRI. It uses a global sparsity constraint with variable density random sampling and L1 minimisation. This work intends to speed up the imaging process by exploiting the non-uniform sparsity in the MR images. Locally Sparsified CS suggests that the image can be even better sparsified by applying local sparsity constraints. The image produced by local CS can further reduce the sample set. This paper establishes the basis for a methodology to exploit non-uniform nature of sparsity and to make the MRI process time efficient by using local sparsity constraints.

History

Title of book

Integrated systems: innovations and applications

Pagination

195 - 210

Publisher

Springer

Place of publication

New York, N.Y.

ISBN-13

9783319158976

Language

eng

Publication classification

B Book chapter; B1 Book chapter

Copyright notice

2015, Springer

Editor/Contributor(s)

M Fathi

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