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Abstract #4441

Real-Time Cardiovascular Phase-Contrast Flow MRI During Valsalva Maneuver

Arun Antony Joseph1, Jan Sohns2, Johannes Kowallick2, Klaus-Dietmar Merboldt1, Joachim Lotz2, Jens Frahm1

1Biomedizinische NMR Forschungs GmbH am Max-Planck-Institut fr biophysikalische Chemie, Gttingen, Niedersachsen, Germany; 2University Medical Center Georg-August-University, Gttingen, Niedersachsen, Germany

Real-time PC imaging with highly undersampled FLASH and regularized nonlinear inversion reconstruction was used for imaging Valsalva maneuver. High temporal resolution of 40 ms per phase contrast map aid in visualizing and analyzing the dynamic changes to flow parameters during the Valsalva maneuver. Variations of flow parameters in ascending aorta for through plane flow at preparation, maneuver and rest phases were analyzed.