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Abstract #1539

Compressed Sensing Reconstructed Radial bSSFP with Asymmetric Views for Free-breathing Cardiac Cine MRI

Hasan Ertan Cetingul 1 , Peter Speier 2 , Michaela Schmidt 2 , Qiu Wang 1 , and Mariappan S. Nadar 1

1 Imaging and Computer Vision, Siemens Corporation, Corporate Technology, Princeton, NJ, United States, 2 Siemens AG, Healthcare Sector, Erlangen, Germany

2D unsegmented real-time bSSFP cine MRI is used for non-invasive assessment of the cardiac function without breath-hold. bSSFP requires short inter-pulse distance repetition time (TR) for robustness against B0 field inhomogeneities and flow. In Cartesian bSSFP the TR is reduced by partial Fourier in the readout direction, i.e., the early part of the echo is omitted. We develop CS reconstructed radial bSSFP with asymmetric views for free-breathing cardiac cine MRI. This technique can speed up acquisition and stabilize bSSFP signals by reducing TR by about 12% with only minor degradation in image quality compared to the conventional full echo schemes.

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