Pulmonary regurgitant volume is superior to fraction using background-corrected phase contrast MRI in determining the severity of regurgitation in repaired tetralogy of Fallot.

ABSTRACT: In the assessment of pulmonary regurgitation (PR) using phase contrast MRI, phase offset errors affect the accuracy of flow. This study evaluated the use of automated background correction for phase offset in the quantification of PR fraction and volume in patients with repaired tetralogy of Fallot (TOF), and to assess its clinical impact. We retrospectively analyzed 203 cardiac MRI studies, performed on 1.5-T scanner. Pulmonary flow (Q(P)) and systemic flow (Q(S)) was assessed both with and without background correction. Non-corrected and corrected Q(P) was correlated with Q(S). PR was correlated with (1) indexed right ventricular end-diastolic volume (RVEDVi) and (2) with differential right and left ventricular stroke volumes (PR(SV)). Both PR fraction and volume showed major change afte

SUBMITTER: Gorter TM 

PROVIDER: S-EPMC4486784 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature