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Abstract #0312

Rapid multi-slice fat and water separated T1 and composite R2* mapping using a dual-echo radial inversion recovery SPGR pulse sequence

Zhitao Li1, John Pauly2, and Shreyas Vasanawala1
1Department of Radiology, Stanford University, Stanford, CA, United States, 2Electrical Engineering, Stanford University, Stanford, CA, United States

A radial dual-echo IR-SPGR technique combined with a principal component based iterative reconstruction algorithm are demonstrated for fat and water separated rapid high-resolution abdominal multi-parameter mapping. This method can yield high-quality fat-signal-fraction map, B0 field map, composite T1 map, water component T1 map as well as a R2* map from a scan as fast as 3seconds/slice. The in-plane resolution of the resulting parameter maps is 1.25mm and the through-plane resolution is 5.00mm. With a selective inversion pulse, multiple slices can be acquired within a breath-hold.

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