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Abstract #4372

On the Spatiotemporal Bandwidth of Cardiac Motion

Marijn E. Brummer1, Mireia Sanz-Blasco2, Sumati Krishnan3, Lei Hou Hamilton4, Senthil Ramamurthy3, David Moratal5

1Pediatrics & Radiology, Emory University, Atlanta, GA, United States; 2Universitat Politcnica de Valncia, Valncia, Spain; 3Pediatrics, Emory University, Atlanta, GA, United States; 4Bioengineering, Georgia Institute of Technology, Atlanta, GA, United States; 5Center for Biomaterials & Tissue Engineering, Universitat Politcnica de Valncia, Valncia, Spain

In theoretical and experimental spatiotemporal spectral analyses of two elementary models of motion, commonly encountered in dynamic cardiac imaging, temporal Nyquist frequencies were observed for each spatial frequency component. Temporal Nyquist rates were found higher for high spatial frequencies. These results open new perspectives on efficient sampling of kt-space for time-resolved cardiac MRI.