Segmented golden ratio radial reordering with variable temporal resolution for dynamic cardiac MRI.

ABSTRACT:

Purpose

Golden ratio (GR) radial reordering allows for retrospective choice of temporal resolution by providing a near-uniform k-space sampling within any reconstruction window. However, when applying GR to electrocardiogram (ECG)-gated cardiac imaging, the k-space coverage may not be as uniform because a single reconstruction window is broken into several temporally isolated ones. The goal of this study was to investigate the image artifacts caused by applying GR to ECG-gated cardiac imaging and to propose a segmented GR method to address this issue.

Methods

Computer simulation and phantom experiments were used to evaluate the image artifacts resulting from three k-space sampling patterns (ie, uniform radial, conventional GR, and segmented GR). Two- and three-dimensional ca

SUBMITTER: Han F 

PROVIDER: S-EPMC4740269 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature