Meeting Banner
Abstract #0688

Real-time and self-gated flow using a golden-angle spiral trajectory

Rajiv Ramasawmy1, Adrienne E. Campbell-Washburn2, Robert J. Lederman1, and Daniel Herzka1

1Cardiovascular Interventions Program, National Heart, Lung & Blood Institute, Bethesda, DC, United States, 2Biochemistry and Biophysics Center, National Heart, Lung & Blood Institute, Bethesda, DC, United States

Beat-to-beat measurements of cardiac output have been demonstrated as a valuable diagnostic tool during interventional cardiovascular MR procedures with physiological provocations such as exercise. This preliminary study investigates the potential of golden-angle spiral imaging for combined real-time and retrospectively-binned flow measurements at rest and during exercise. In flow phantoms and human subjects, good agreement was observed between reference Cartesian measurements and self-gated spiral acquisitions at rest. During exercise, real-time and self-gated spiral imaging measured an increase in cardiac output, demonstrating this technique’s potential application to interventional MRI.

This abstract and the presentation materials are available to members only; a login is required.

Join Here