Abstract #3213
Robust B 1 -Insensitive Whole-Brain T 1 Mapping with 3-TI MP-RAGE: Validation and Acquisition Strategy
Ives R Levesque 1,2 , Manojkumar Saranathan 1 , Thomas Tourdias 1,3 , Jason Su 1,4 , James A Rioux 1 , and Brian K Rutt 1
1
Radiology, Stanford University, Stanford,
CA, United States,
2
Medical
Physics, Oncology and RI-MUHC, McGill University,
Montreal, QC, Canada,
3
Department of
Neuroradiology, Bordeaux University Hospital, Bordeaux,
France,
4
Electrical
Engineering, Stanford University, Stanford, CA, United
States
Fast T
1
mapping
is of interest notably for segmentation of brain
structures and myelin imaging. Whole-brain,
high-resolution T
1
maps
can be obtained from 3 MP-RAGE images with carefully
selected inversion times in a clinically relevant time
and free from B
1
heterogeneity
effects. In this work, we validated the method for in
vivo human applications, and compared the accuracy and
blur of the 3-TI-MP method for different k-space
ordering and parallel imaging factors. Our results show
high accuracy and improved map quality from a 2D-centric
k-space ordering scheme.
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