Peter Brnert1, Kay Nehrke1, Maarten Versluis2, Andrew Webb2
1Philips Research Laboratories, Hamburg, Germany; 2C.J. Gorter Center for high field MRI, Leiden University Medical Center, Department of Radiology, Leiden, Netherlands
With the move towards higher fields, RF homogeneity problems caused by wave propagations effects have become obvious, which can compromise clinical diagnosis. The knowledge about the actual B1+ field is a prerequisite for compensation and can also be used to estimate electric tissue parameters and E-field components and SAR at ultra high fields. All known B1+ mapping techniques are inefficient hampering application especially in parallel transmit set-ups. To overcome these limitations, in this work, a new, very fast, simple and safe B1+ mapping approach for ultra-high field imaging is introduced allowing volumetric B1+ brain mapping in less than 10s.
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