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Abstract #3215

Slice-Accelerated Inversion Recovery T 1 Mapping

John W Grinstead 1 , Dingxin Wang 2 , Himanshu Bhat 3 , Vibhas Deshpande 4 , Stephen F Cauley 5 , Kawin Setsompop 5 , Thomas Benner 6 , Valerie C Anderson 7 , and William D Rooney 7

1 Siemens Healthcare, Portland, OR, United States, 2 Siemens Healthcare, MN, United States, 3 Siemens Healthcare, MA, United States, 4 Siemens Healthcare, TX, United States, 5 A.A. Martinos Center for Biomedical Imaging, MA, United States, 6 Siemens Healthcare, Erlangen, Germany, 7 Oregon Health & Science University, OR, United States

Parametric T 1 mapping using inversion recovery has competing requirements for speed, signal-to-noise ratio, spatial resolution, anatomical coverage, and adequate sampling of the longitudinal magnetization recovery. Slice-accelerated multi-slice techniques utilize RF pulses which excite multiple 2D slices simultaneously. We describe the implementation and application of simultaneous multi-slice techniques to accelerate quantitative T 1 mapping. Compared to previous approaches, this provides extra flexibility in the number of slices and inversion recovery samples possible within a given measurement time, and has the potential of making quantitative T 1 mapping much more feasible and clinically practical.

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