Coprime dual-velocity encoding for extended velocity dynamic range in 4D flow magnetic resonance imaging.

ABSTRACT:

Background

In the field of cardiovascular imaging, four-dimensional (4D) flow cardiovascular magnetic resonance (CMR) provides non-invasive assessment of blood flow. Dual velocity encoding (dual-VENC) strategies have emerged to obtain quantitative information on both low and high blood flow velocities simultaneously. However, these strategies often encounter difficulties in coping with large velocity ranges. This work presents a dual-VENC 4D flow CMR sequence that utilizes the coprime rule to define the VENC ratio.

Methods

A dual-VENC 4D flow CMR sequence and reconstruction algorithm were developed and validated in vitro at two different field strengths, using a flow phantom generating realistic complex flow patterns. A digital twin of the phantom allowed comparison of the M

SUBMITTER: Bartoli MB 

PROVIDER: S-EPMC12032882 | biostudies-literature | 2025 Summer

REPOSITORIES: biostudies-literature