Comprehensive 4D velocity mapping of the heart and great vessels by cardiovascular magnetic resonance.

ABSTRACT:

Background

Phase contrast cardiovascular magnetic resonance (CMR) is able to measure all three directional components of the velocities of blood flow relative to the three spatial dimensions and the time course of the heart cycle. In this article, methods used for the acquisition, visualization, and quantification of such datasets are reviewed and illustrated.

Methods

Currently, the acquisition of 3D cine (4D) phase contrast velocity data, synchronized relative to both cardiac and respiratory movements takes about ten minutes or more, even when using parallel imaging and optimized pulse sequence design. The large resulting datasets need appropriate post processing for the visualization of multidirectional flow, for example as vector fields, pathlines or streamlines, or for r

SUBMITTER: Markl M 

PROVIDER: S-EPMC3025879 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature