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Abstract #2952

Rapid 3D Relaxation Time and Proton Density Quantification Using a Modified Radial IR TrueFisp Sequence

Philipp Ehses1, Vikas Gulani2, Peter Michael Jakob1, Mark A. Griswold2, Felix A. Breuer3

1Dept. of Experimental Physics 5, Universitt Wrzburg, Wrzburg, Germany; 2Department of Radiology, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, OH, United States; 3Research Center Magnetic Resonance Bavaria (MRB),, Wrzburg, Germany

The IR TrueFISP sequence has been shown to be a promising approach for the simultaneous quantification of proton density, T1 and T2 maps. However, delays between individual segments are required in order to allow the magnetization to recover, resulting in relatively long scan times. Recently, a modified IR TrueFISP method has been proposed, which does not necessitate relaxation delays. This method was combined with a radial stack-of-stars acquisition with golden-ratio based profile order, in order to rapidly obtain a full set of parameter maps of the brain in three dimensions.