Correlation of Right Ventricular Ejection Fraction and Tricuspid Annular Plane Systolic Excursion in Tetralogy of Fallot by Magnetic Resonance Imaging
Overview
Authors
Affiliations
The correlation between right ventricular ejection fraction (RVEF) and tricuspid annular plane systolic excursion (TAPSE) by two-dimensional (2-D) echo has been repeatedly validated, but not by magnetic resonance imaging (MRI) nor in patients with congenital heart disease. We tested whether TAPSE measurements by MRI correlate with RVEF in surgically repaired tetralogy of Fallot (TOF) patients. TAPSE was measured from systolic displacement of the RV-freewall/tricuspid annular plane junction in the apical 4-chamber view in 7 normal subjects and 14 TOF patients. The RV was reconstructed in 3-D from manually traced borders on MR images to compute true EF. Because we previously observed discrepancy between TAPSE and RVEF in the presence of regional dysfunction, we also analyzed RV wall motion in terms of regional stroke volume at 20 short axis slices from apex to tricuspid annulus. RVEF was 52 +/- 3% in normal subjects and 41 +/- 9% in TOF (P < 0.01). TAPSE correlated weakly (r = 0.50, P < 0.05) with RVEF. TOF patients exhibited increased regional stroke volume from apical portions of the RV and decreased regional stroke volume at the base compared to normal (P < 0.05 at 15 of 20 slices). Regional stroke volume in apical slices correlated inversely with RVEF such that patients with higher apical stroke volume had lower RVEF (P < 0.05). TAPSE is not a reliable measure of RVEF in TOF by MRI. TAPSE may be of limited use in conditions that exhibit abnormal regional contraction.
DeSPPNet: A Multiscale Deep Learning Model for Cardiac Segmentation.
Elizar E, Muharar R, Zulkifley M Diagnostics (Basel). 2025; 14(24.
PMID: 39767181 PMC: 11674640. DOI: 10.3390/diagnostics14242820.
Bowen D, Kauling R, Pelosi C, van Haveren L, McGhie J, Cuypers J Eur Heart J Imaging Methods Pract. 2024; 1(2):qyad033.
PMID: 39045081 PMC: 11195704. DOI: 10.1093/ehjimp/qyad033.
The right ventricle in tetralogy of Fallot: adaptation to sequential loading.
Alipour Symakani R, van Genuchten W, Zandbergen L, Henry S, Taverne Y, Merkus D Front Pediatr. 2023; 11:1098248.
PMID: 37009270 PMC: 10061113. DOI: 10.3389/fped.2023.1098248.
Madry W, Karolczak M, Myszkowski M J Ultrason. 2019; 19(76):9-16.
PMID: 31088006 PMC: 6750179. DOI: 10.15557/JoU.2019.0002.
Baumann F, Obeid S, Gilhofer T, Siegrist P, von Spiczak J, Luscher T Int J Cardiovasc Imaging. 2019; 35(9):1557-1561.
PMID: 31044328 DOI: 10.1007/s10554-019-01606-9.