Validation of 2D flow MRI for helical and vortical flows.

ABSTRACT:

Purpose

The main objective of this study was to develop two-dimensional (2D) phase contrast (PC) methods to quantify the helicity and vorticity of blood flow in the aortic root.

Methods

This proof-of-concept study used four-dimensional (4D) flow cardiovascular MR (4D flow CMR) data of five healthy controls, five patients with heart failure with preserved ejection fraction and five patients with aortic stenosis (AS). A PC through-plane generated by 4D flow data was treated as a 2D PC plane and compared with the original 4D flow. Visual assessment of flow vectors was used to assess helicity and vorticity. We quantified flow displacement (FD), systolic flow reversal ratio (sFRR) and rotational angle (RA) using 2D PC.

Results

For visual vortex flow presence near the inner

SUBMITTER: Mehmood Z 

PROVIDER: S-EPMC10928773 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature