Real-time free-breathing cardiac imaging with self-calibrated through-time radial GRAPPA.

ABSTRACT:

Purpose

Real-time free-breathing cardiac imaging with highly undersampled radial trajectories has previously been successfully demonstrated using calibrated radial generalized autocalibrating partially parallel acquisition (rGRAPPA). A self-calibrated approach for rGRAPPA is proposed that removes the need for the calibration prescan.

Methods

To investigate the effect of various parameters on image quality, a comprehensive imaging study on one normal swine was performed. Root mean squared errors (RMSEs) were computed with respect to gold standard acquisitions, and several acquisition/reconstruction strategies were compared. Additionally, the method was tested on 13 human subjects, and RMSEs relative to standard through-time radial GRAPPA were computed.

Results

Real-tim

SUBMITTER: Sayin O 

PROVIDER: S-EPMC5920649 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature