Motion compensated whole-heart coronary cardiovascular magnetic resonance angiography using focused navigation (fNAV).

ABSTRACT:

Background

Radial self-navigated (RSN) whole-heart coronary cardiovascular magnetic resonance angiography (CCMRA) is a free-breathing technique that estimates and corrects for respiratory motion. However, RSN has been limited to a 1D rigid correction which is often insufficient for patients with complex respiratory patterns. The goal of this work is therefore to improve the robustness and quality of 3D radial CCMRA by incorporating both 3D motion information and nonrigid intra-acquisition correction of the data into a framework called focused navigation (fNAV).

Methods

We applied fNAV to 500 data sets from a numerical simulation, 22 healthy subjects, and 549 cardiac patients. In each of these cohorts we compared fNAV to RSN and respiratory resolved extradimensional golden-an

SUBMITTER: Roy CW 

PROVIDER: S-EPMC8006382 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature