Abstract
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.
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Nahavandi, S., Razzaq, F.A., Mohamed, S., Bhatti, A., Brotchie, P. (2015). Locally Sparsified Compressive Sensing in Magnetic Resonance Imaging. In: Fathi, M. (eds) Integrated Systems: Innovations and Applications. Springer, Cham. https://doi.org/10.1007/978-3-319-15898-3_12
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DOI: https://doi.org/10.1007/978-3-319-15898-3_12
Publisher Name: Springer, Cham
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