Determination of Cardiac Output by Magnetic Resonance Imaging

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Abstract
Quantitative flow measurements to determine forward flow in the ascending aorta were performed in 7 normal volunteers and in 6 patients by magnetic resonance imaging using an interleaved gradient echo pulse sequence. Cardiac output was determined simultaneously by a classical indicator dilution technique in the normals. In the patients, left- and right-ventricular stroke volumes were determined immediately before the flow measurement by a traditional spin echo multislice technique. There was a close correlation between aortic forward flow- and indicator dilution-derived cardiac output (r = 0.96, p

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