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Abstract #2600

A 3D Calibration Protocol for 9.4T Human MRI

Daniel Brenner1, Kaveh Vahedipour1, Tony Stcker1, Jrg Felder1, Frank Geschewski1, Nadim Jon Shah1, 2

1INM-4, Forschungszentrum Juelich, Juelich, Germany; 2JARA - Faculty of Medicine, RWTH Aachen University, Aachen, Germany

UHF MRI at 9.4T suffers from strong RF inhomogeneities. Measurement of the field distribution of a pTX system is crucial for RF shims and pulse design focussing on removing these problems. A robust 3D whole brain calibration protocol, yielding B1 and B0 maps and an approximate brain mask in approximately 5 minutes is demonstrated. The B1 information is corrected for the effect of off-resonances and limited dynamic range.

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Keywords

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