Fully self-gated whole-heart 4D flow imaging from a 5-minute scan.

ABSTRACT:

Purpose

To develop and validate an acquisition and processing technique that enables fully self-gated 4D flow imaging with whole-heart coverage in a fixed 5-minute scan.

Theory and methods

The data are acquired continuously using Cartesian sampling and sorted into respiratory and cardiac bins using the self-gating signal. The reconstruction is performed using a recently proposed Bayesian method called ReVEAL4D. ReVEAL4D is validated using data from 8 healthy volunteers and 2 patients and compared with compressed sensing technique, L1-SENSE.

Results

Healthy subjects-Compared with 2D phase-contrast MRI (2D-PC), flow quantification from ReVEAL4D shows no significant bias. In contrast, the peak velocity and peak flow rate for L1-SENSE are significantly underestimated. Com

SUBMITTER: Pruitt A 

PROVIDER: S-EPMC7718421 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature