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Quantitative MR signal behavior in cardiac cine loops as a function of heart rate
Author(s) -
Duewell Stefan,
Koch Manola,
Wüthrich Ruedi,
Stöhr Susanne,
Jenni Rolf,
von Schulthess Gustav K.
Publication year - 1992
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880020114
Subject(s) - intensity (physics) , heart rate , cardiology , signal (programming language) , cardiac cycle , medicine , aorta , heart disease , magnetic resonance imaging , right heart , pulmonary artery , radiology , physics , blood pressure , computer science , optics , programming language
To evaluate the heart cycle‐dependent signal intensity changes in the cardiac chambers, the aorta, and the pulmonary artery, five healthy volunteers were studied with gradient‐echo magnetic resonance cine loops at different heart rates. Quantitative evaluation of signal intensity on each side of the cardiac valves showed that there were changes in signal intensity due to section‐entry and spin‐phase phenomena but none due to the increase in heart rate. The authors conclude that there is no heart rate‐dependent signal loss in healthy persons that simulates valvular dysfunction, thus suggesting that signal intensity change can be used as an indicator for this disease, independent of heart rate.