accelerating dynamic cardiac mr imaging using structured sparse representation
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2013
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Abstract
Compressed sensing (CS) has produced promising results on dynamic cardiac MR imaging by exploiting the sparsity in image series. In this paper, we propose a new method to improve the CS reconstruction for dynamic cardiac MRI based on the theory of structured sparse representation. The proposed method user the PCA subdictionaries for adaptive sparse representation and suppresses the sparse coding noise to obtain good reconstructions. An accelerated iterative shrinkage algorithm is used to solve the optimization problem and achieve a fast convergence rate. Experimental results demonstrate that the proposed method improves the reconstruction quality of dynamic cardiac cine MRI over the state-of-the-art CS method.
| Reference Key |
cai2013computationalaccelerating
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|---|---|
| Authors | ;Nian Cai;Shengru Wang;Shasha Zhu;Dong Liang |
| Journal | advanced functional materials |
| Year | 2013 |
| DOI |
10.1155/2013/160139
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| URL | |
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