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“School of Cognitive Sciences”

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Paper   IPM / Cognitive Sciences / 13728
School of Cognitive Sciences
  Title:   Compressive Sensing Cardiac Cine MRI Using Invertible Non-Linear Transform
1.  P. Zamani
2.  H. Soltanian-Zadeh
  Status:   In Proceedings
  Proceeding: The 22nd Iranian Conference on Electrical Engineering (ICEE 2014), May 20-22, 2014, Shahid Beheshti University
  Year:  2014
  Supported by:  IPM
Since compressive sensing (CS) is robust to noise and does not require any special hardware, CS-based methods are advantageous to other ones for increasing MRI speed. Monotonic re-ordering (sorting) of the desired signal can increase its sparsity and consequently CS reconstruction efficiency. To use this, it is essential to estimate re-ordering operator which usually has been done by parallel imaging methods. These methods need regular sampling patterns which may not be optimum for CS reconstruction. We replaced the re-ordering operator by an invertible non-linear transform. The advantages of this approach are greater reconstruction speed, no need for preliminary reconstruction and estimation of the re-ordering operator and possibility of having an arbitrary sampling pattern. We successfully applied our approach to speed up cardiac cine MRI by factor of 2. This reduced the mean reconstruction error from 5.65

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