4D Flow MRI Quantification of Congenital Shunts: Comparison to Invasive Catheterization.

ABSTRACT:

Purpose

To compare invasive right heart catheterization with four-dimensional (4D) flow MRI for estimating shunt fraction in patients with intracardiac and extracardiac shunts.

Materials and methods

In this retrospective study, patients who underwent 4D flow MRI and invasive right heart catheterization with a shunt run between August 2015 and November 2018 were included. The primary objective was comparison of estimated shunt fraction (ratio of pulmonary-to-systemic flow, Q_p/Q_s) at 4D flow and catheterization. Secondary objectives included comparison of the right ventricular-to-left ventricular stroke volume ratio (RVSV/LVSV) to shunt fraction (for those with applicable shunts) and comparison of cardiac output between 4D flow and catheterization. Statis

SUBMITTER: Horowitz MJ 

PROVIDER: S-EPMC8098085 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature