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Abstract #2732

Temporal Filtering Effects in Auto-Calibrating TSENSE

Peter Kellman1, Martin Blaimer2, Felix Breuer2, Mark Griswold3

1National Institutes of Health, Bethesda, MD, USA; 2Research Center Magnetic Resonance Bavaria, Wurzburg, Germany; 3Department of Radiology, University Hospitals of Cleveland and Case Western Reserve University, Cleveland, OH, USA

The auto-calibrating TSENSE method may lead to temporal filtering in the form of signal nulls in the temporal spectra of the dynamic SENSE images due to errors in the coil sensitivity estimates. The TGRAPPA reconstruction using the same data has no temporal nulls but does not meet the pixel-wise optimum SNR that the SENSE method does. A hybrid auto-calibrating TSENSE method is proposed which combines TSENSE and TGRAPPA to achieve improved SNR without undesired temporal filtering.