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Abstract #4756

Reconstruction of Highly Accelerated Radial Cardiac Cine MRI using GROG based k-t ESPIRiT with TV Constraint

Ibtisam Aslam1, Lindsey A CROWE 2, Miklos KASSAI2, Jean-Paul VALLEE 2, and Hammad Omer1

1Electrical Engineering, COMSATS University Islamabad, Pakistan, Islamabad, Pakistan, 2Service of Radiology, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Switzerland, GENEVA, Switzerland

Breath-hold cardiac cine MRI requires fast data acquisition with good spatio-temporal resolution. Accelerated non-Cartesian trajectories accelerate data acquisition but lead to artifacts. This work proposes a GROG-based k-t ESPIRiT approach with TV to recover the unaliased MR real-time cine images with good spatio-temporal quality. The proposed method was tested on 8 patients with single breath-hold, short-axis, real-time cardiac cine whole-heart stack with under-sampled radially acquired data using trueFISP. The efficiency of the proposed reconstruction was clinically assessed for automated segmentation, CNR & SNR and compared with the standard image reconstruction available on Siemens 3T PRISMA and 1.5T AERA scanners.

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