Real-time imaging with radial GRAPPA: Implementation on a heterogeneous architecture for low-latency reconstructions.

ABSTRACT: Combination of non-Cartesian trajectories with parallel MRI permits to attain unmatched acceleration rates when compared to traditional Cartesian MRI during real-time imaging. However, computationally demanding reconstructions of such imaging techniques, such as k-space domain radial generalized auto-calibrating partially parallel acquisitions (radial GRAPPA) and image domain conjugate gradient sensitivity encoding (CG-SENSE), lead to longer reconstruction times and unacceptable latency for online real-time MRI on conventional computational hardware. Though CG-SENSE has been shown to work with low-latency using a general purpose graphics processing unit (GPU), to the best of our knowledge, no such effort has been made for radial GRAPPA. Radial GRAPPA reconstruction, which is robust even wi

SUBMITTER: Saybasili H 

PROVIDER: S-EPMC4035436 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature