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Combined Similarity to Reference Image with Joint Sparsifying Transform for Longitudinal Compressive Sensing MRI

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  • Ruirui Kang
  • Gangrong Qu
  • Bin Cao
  • Long Yan

Abstract

It is challenging to save acquisition time and reconstruct a medical magnetic resonance (MR) image with important details and features from its compressive measurements. In this paper, a novel method is proposed for longitudinal compressive sensing (LCS) MR imaging (MRI), where the similarity between reference and acquired image is combined with joint sparsifying transform. Furthermore, the joint sparsifying transform with the wavelet and the Contourlet can efficiently represent both isotropic and anisotropic features and the objective function is solved by extended smooth-based monotone version of the fast iterative shrinkage thresholding algorithm (SFISTA). The experiment results demonstrate that the existing regularization model obtains better performance with less acquisition time and recovers both edges and fine details of MR images, much better than the existing regularization model based on the similarity and the wavelet transform for LCS-MRI.

Suggested Citation

  • Ruirui Kang & Gangrong Qu & Bin Cao & Long Yan, 2016. "Combined Similarity to Reference Image with Joint Sparsifying Transform for Longitudinal Compressive Sensing MRI," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-12, September.
    • Handle: RePEc:hin:jnlmpe:4162194
    DOI: 10.1155/2016/4162194
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