BACKGROUND: Assessing the aortic valvular orifice is important in judging the severity of aortic stenosis. Magnetic resonance imaging visualizes in-plane valvular motion. We studied the value of magnetic resonance planimetry of the aortic valve orifice. METHODS: We used breath-hold gradient echocardiographic sequences on a clinical magnetic resonance system (1.5 T) and studied 25 patients with symptomatic valvular aortic stenosis. We performed a planimetry of the valvular orifice in systolic images of the valvular plane. The results were compared with echocardiography (continuity equation) and cardiac catheterization (Gorlin formula). RESULTS: Magnetic resonance planimetry was feasible in all patients, and the image quality was invariably adequate. The magnetic resonance imaging results correlated well with the data calculated from catheterization and less robustly with the echocardiographic results. The 3 methods were similar in terms of leading to clinical decisions. CONCLUSIONS: We suggest that magnetic resonance flow planimetry of the aortic valve orifice offers a simple, reliable, fast, and safe method to noninvasively quantify aortic stenosis.
BACKGROUND: Assessing the aortic valvular orifice is important in judging the severity of aortic stenosis. Magnetic resonance imaging visualizes in-plane valvular motion. We studied the value of magnetic resonance planimetry of the aortic valve orifice. METHODS: We used breath-hold gradient echocardiographic sequences on a clinical magnetic resonance system (1.5 T) and studied 25 patients with symptomatic valvular aortic stenosis. We performed a planimetry of the valvular orifice in systolic images of the valvular plane. The results were compared with echocardiography (continuity equation) and cardiac catheterization (Gorlin formula). RESULTS: Magnetic resonance planimetry was feasible in all patients, and the image quality was invariably adequate. The magnetic resonance imaging results correlated well with the data calculated from catheterization and less robustly with the echocardiographic results. The 3 methods were similar in terms of leading to clinical decisions. CONCLUSIONS: We suggest that magnetic resonance flow planimetry of the aortic valve orifice offers a simple, reliable, fast, and safe method to noninvasively quantify aortic stenosis.
Authors: Peter Bernhardt; Christoph Rodewald; Julia Seeger; Birgid Gonska; Dominik Buckert; Michael Radermacher; Vinzenz Hombach; Wolfgang Rottbauer; Jochen Wöhrle Journal: Clin Res Cardiol Date: 2015-09-22 Impact factor: 5.460
Authors: Matthias Renker; Akos Varga-Szemes; U Joseph Schoepf; Stefan Baumann; Davide Piccini; Michael O Zenge; Wolfgang G Rehwald; Edgar Müller; Jeremy D Rier; Helge Möllmann; Christian W Hamm; Daniel H Steinberg; Carlo N De Cecco Journal: Eur Radiol Date: 2015-07-20 Impact factor: 5.315
Authors: Julio Garcia; Alex J Barker; Pim van Ooij; Susanne Schnell; Jyothy Puthumana; Robert O Bonow; Jeremy D Collins; James C Carr; Michael Markl Journal: Magn Reson Med Date: 2014-09-23 Impact factor: 4.668
Authors: Thomas Schlosser; Nasser Malyar; Markus Jochims; Frank Breuckmann; Peter Hunold; Oliver Bruder; Raimund Erbel; Jörg Barkhausen Journal: Eur Radiol Date: 2006-10-17 Impact factor: 5.315
Authors: Julio Garcia; Michael Markl; Susanne Schnell; Bradley Allen; Pegah Entezari; Riti Mahadevia; S Chris Malaisrie; Philippe Pibarot; James Carr; Alex J Barker Journal: Magn Reson Imaging Date: 2014-04-24 Impact factor: 2.546