Acquisition and reconstruction of undersampled radial data for myocardial perfusion magnetic resonance imaging.

ABSTRACT:

Purpose

To improve myocardial perfusion magnetic resonance imaging (MRI) by reconstructing undersampled radial data with a spatiotemporal constrained reconstruction method (STCR).

Materials and methods

The STCR method jointly reconstructs all of the time-frames for each slice. In 7 subjects at rest, on a 3-T scanner, the method was compared with a conventional (GRAPPA) Cartesian approach.

Results

Increased slice coverage was obtained, as compared with Cartesian acquisitions. On average, 10 slices were obtained per heartbeat for radial acquisitions (8 of which are suitable for visual analysis with the remaining 2 slices, in theory, usable for quantitative purposes), whereas 4 slices were obtained for the conventional Cartesian acquisitions. The new method was robust to

SUBMITTER: Adluru G 

PROVIDER: S-EPMC2720808 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature