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Abstract #4567

High Spatial Frequencies Are More Dynamic Than Low Spatial Frequencies in Cardiac Motion

Mireia Sanz Blasco1, Sumati Krishnan2, David Moratal1, Senthil Ramamurthy3, Marijn E. Brummer2

1Universitat Politcnica de Valncia, Valncia, Spain; 2Pediatrics/CRC, Emory University, Atlanta, GA, USA; 3Children's Healthcare of Atlanta, Atlanta, GA, USA

A spatiotemporal spectral analysis is presented of kt-space in cine images in the presence of several types of cardiac motion. The temporal spectral content of each k-space view is quantified by a single spectral coefficient. Paradoxically, comparison of these coefficients between k-space views for phantom simulation data and in short-axis cardiac MRI data reveals greater relative changes in high spatial frequencies than in low spatial frequencies.