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Abstract #3946

Ventricular-Function Assessment with Online Post-Processing of Real-time Free-Breathing Radial GRAPPA images

Haris Saybasili 1 , Gary McNeal 1 , Michaela Schmidt 2 , Peter Kellman 3 , Mark Griswold 4 , Michael Zenge 2 , and Nicole Seiberlich 5

1 Siemens Healthcare USA, Inc., Chicago, Illinois, United States, 2 Siemens AG Healthcare Sector, Erlangen, Germany, 3 National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States, 4 Radiology, Case Western Reserve University, Cleveland, Ohio, United States, 5 Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, United States

Radial GRAPPA is well suited for real-time free-breathing cardiac imaging due to its high temporal/spatial resolution. However, the heart-rate variations during real-time acquisitions cause inconsistent number of phases per slice/heart beat. Hence, an off-line post-processing step is often required prior to cardiac function analysis. We developed an online reconstruction module capable of generating a predefined number of phases per slice/heart beat by interpolating real-time images. This module was integrated into radial GRAPPA reconstruction pipeline without code modifications. Healthy volunteer data were acquired and analyzed to compare cardiac function parameters calculated from automatically processed real-time images to the results from segmented cine images.

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