Abstract #3216
Simultaneous Whole-Brain T 1 and Flip Angle Mapping with MP3RAGE
James A. Rioux 1 , Manojkumar Saranathan 1 , and Brian K. Rutt 1
1
Radiology, Stanford University, Stanford,
CA, United States
The MP3RAGE sequence is a straightforward modification
of MP2RAGE that acquires three images with different T
1
contrast
following an inversion pulse. These images can be used
for direct T
1
lookup,
enabling accurate high-resolution mapping in clinically
relevant scan times (10 minutes or less). We demonstrate
that, with an appropriate choice of parameters, MP3RAGE
T
1
maps
can be made almost totally insensitive to B
1
effects,
a key requirement for high-field imaging. These T
1
maps
have excellent accuracy compared to a reference map. The
MP3RAGE data can also be used to generate a whole-brain
flip angle map at the same resolution.
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