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Measurement of stroke volume and cardiac output within a single breath hold with echo-planar MR imaging

✍ Scribed by George J. Hunter; Leena M. Hamberg; Robert M. Weisskoff; Elkan F. Halpern; Thomas J. Brady

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
889 KB
Volume
4
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

The measurement of cardiac output and ejection fraction is useful in the treatment of diverse cardiac and cardiopulmonary disease states. Although several techniques are available for accurate measurement of left ventricular parameters, assessment of the right ventricle is less well represented. No single method is overwhelmingly superior, each having different strengths and weaknesses. In the present study, the applicability of an echo‐planar magnetic resonance (MR) imaging method in which a complete volumetric measurement of the right and left ventricles may be obtained during 12 heartbeats is demonstrated. This rapidity permits imaging during a 15‐second breath hold. The authors show in 12 volunteers that breath‐hold echo‐planar volume measurements of both ventricles were consistent with results obtained with conventional MR imaging methods.

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