Keywords: RF Pulse Design & Fields, High-Field MRI
Motivation: Following the commissioning of the Iseult CEA 11.7 T whole-body MRI system, first in vivo human brain images have been acquired at 11.7T.
Goal(s): Our aim is to demonstrate the feasibility of whole brain imaging using an 8TX/32RX home-built RF coil and to test subject-tailored pulses as well as calibration-pTX pulses.
Approach: Using 9 in-vivo B1 maps of the brain, we prepared and tested tailored kT-point pulses and universal GRAPE pulses to be used in non-selective 3D sequences.
Results: Our retrospective pulse performance analysis confirms the feasibility of whole brain imaging at 11.7T both using subject tailored and calibration free pTX.
Impact: . At 11.7T, the heterogeneity of the pseudo-CP mode, the transmit efficiency and the SAR level are such that dynamic pTX and extensive RF pulse optimizations are essential for whole brain imaging applications.
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