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Abstract #0946

Free Breathing 3D Abdominal T 1 Mapping with 3D Golden Angle Through-Time Spiral GRAPPA

Wei-Ching Lo 1 , Yong Chen 2 , Jesse I. Hamilton 1 , Dan Ma 1 , Yun Jiang 1 , Katherine L. Wright 1 , Mark A. Griswold 1,2 , Vikas Gulani 1,2 , and Nicole Seiberlich 1

1 Dept. of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States, 2 Dept. of Radiology, University Hospitals of Cleveland and Case Western Reserve University, Cleveland, OH, United States

Motion artifact suppression is a major challenge in abdominal magnetic resonance imaging, and particularly in quantitative imaging. Here, a new technique is introduced, where 3D high-resolution abdominal T 1 maps are obtained during free-breathing by combining inversion-recovery Look-Locker method, respiratory self-navigation, and 3D golden angle through-time spiral GRAPPA reconstruction. T 1 values from different tissues are in excellent agreement with breath-hold data and literature. This technique may be beneficial for those who cannot hold their breath during MR acquisition or need a larger spatial coverage or higher spatial resolution.

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