Aortic velocity measurements derived from phase-contrast MRI are influenced by a cardiac implantable electronic device in both adult and pediatric human subjects.

ABSTRACT:

Purpose

Overall there is a lack of evidence on the accuracy and precision of phase-contrast (PC) MRI in patients with cardiac implantable electronic devices (CIEDs). The purpose of this study is to determine whether aortic velocity measurements are influenced by a CIED.

Methods

We scanned 21 adult patients and 8 pediatric volunteers using clinical standard PC and real-time PC (rt-PC) sequences with and without a CIED generator taped on human subjects (below the left clavicle for adults and children; also on the abdomen for children) to mimic image artifacts. Peak and mean velocities above the aortic valve were calculated.

Results

The Bland-Altman analyses on peak velocity measurements in pediatric subjects showed that both the accuracy and precision worsen as the dist

SUBMITTER: Yang H 

PROVIDER: S-EPMC11893034 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature