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1. Non-invasive estimation of pulmonary outflow tract obstruction: A comparative study of cardiovascular phase contrast magnetic resonance and Doppler echocardiography versus cardiac catheterization

Author

Johannes Tammo, Kowallick, Michael, Steinmetz, Andreas, Schuster, Christina, Unterberg-Buchwald, Thuy-Trang, Nguyen, Martin, Fasshauer, Wieland, Staab, Olga, Hösch, Christina, Rosenberg, Thomas, Paul, Joachim, Lotz, and Jan Martin, Sohns

Subjects
MR phase-contrast flow, Pulmonary outflow tract obstruction, Pressure gradient, Article, Doppler echocardiography, Congenital heart disease, Catheterization
Abstract

Aim To compare estimated pressure gradients from routine follow-up cardiovascular phase-contrast magnetic resonance (PC-MR) with those from Doppler echocardiography and invasive catheterization in patients with congenital heart disease (CHD) and pulmonary outflow tract obstruction. Methods In 75 patients with pulmonary outflow tract obstruction maximal and mean PC-MR gradients were compared to maximal and mean Doppler gradients. Additionally, in a subgroup of 31 patients maximal and mean PC-MR and Doppler pressure gradients were compared to catheter peak-to-peak pressure gradients (PPG). Results Maximal and mean PC-MR gradients underestimated pulmonary outflow tract obstruction as compared to Doppler (max gradient: bias = + 8.4 mm Hg (+ 47.6%), r = 0.89, p

Published
2015

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