Key result
Magnetic resonance imaging agreed with angiography in 70% and echocardiography in 80% of patients for assessing aortic regurgitation severity, with strong correlation for stroke volume.
Why the study?
Does magnetic resonance imaging accurately determine regurgitant volume compared to echocardiography and angiography in patients with aortic regurgitation?
Observational (n=40)
Does magnetic resonance imaging accurately determine regurgitant volume compared to echocardiography and angiography in patients with aortic regurgitation?
Answers are grounded in this paper and cite their sources.
MRI is a reliable technique for quantitative assessment of aortic regurgitant volume, showing good agreement with traditional methods like angiography and echocardiography.
Magnetic resonance imaging was compared with echocardiography and angiography in determining the regurgitant volume in patients with aortic regurgitation. Forty patients were examined at 1.5 T. The regurgitant jet was located using a gradient-echo sequence. Cine measurements were performed to calculate left ventricular function. For flow evaluation, a velocity-encoded breath-hold phase-difference magnetic resonance sequence was used. The degree of aortic regurgitation assessed by magnetic resonance imaging agreed with that of angiography in 28 of 40 (70%) patients, and with the echocardiography result in 80%. Correlation between calculated stroke volume by magnetic resonance cine and flow measurements was very good (r > 0.9). Magnetic resonance imaging enables quick and reliable quantitative assessment of aortic regurgitant volume, and it might be the optimal technique for multiple follow-up studies and assessment of left ventricular function, leading to better evaluation of disease severity and optimization of the timing of valve surgery.
No takes yet. Share an insight, caveat, or question.
Wittlinger et al. (2008) conducted an observational in Aortic regurgitation (n=40). Magnetic resonance imaging vs. Echocardiography and angiography was evaluated on Agreement in degree of aortic regurgitation. Magnetic resonance imaging agreed with angiography in 70% and echocardiography in 80% of patients for assessing aortic regurgitation severity, with strong correlation for stroke volume.
Synapse has enriched 10 related papers. Consider them for comparative context: