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Abstract #0428

Targeted Traveling Wave MRI

Marco Mueller1, Stefan Alt, Reiner Umathum, Wolfhard Semmler, Michael Bock

1DKFZ, Heidelberg, Baden-Wrttemberg, Germany

The travelling wave concepts can be used for whole body MRI at high fields but suffers from high energy deposition (SAR). We introduce a coaxial targeted travelling wave RF coil, which guides the wave to any desired region in the body. To limit whole body SAR, the wave-propagation range is confined to the imaging region. Imaging results with a coil prototype show that the B1 field is focused to the targeted imaging region, and a homogeneous B1 field distribution is achieved outside the magnets symmetry axis.