Meeting Banner
Abstract #1126

An 8/15-Channel Tx/Rx Head Neck RF Coil Combination with Semi-Dynamic B1 Shimming for Improved fMRI of the Cerebellum at 7 T

Viktor Pfaffenrot1,2, Sascha Brunheim1,2, Stefan H.G. Rietsch1,2, Thomas M. Ernst1,3, Oliver Kraff1, Stephan Orzada1, and Harald H. Quick1,2

1Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany, 2High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany, 3Department of Neurology, University Hospital Essen, Essen, Germany

Functional MRI of the human cerebellum is challenging at ultrahigh fields, since conventional RF head coils hardly cover the cerebellum with sufficient signal-to-noise ratio and B1+-inhomogeneities introduce challenges. In order to overcome these problems, a coil combination consisting of an 8ch transceiver head coil and a 7ch receive only array are combined to improve imaging of the whole brain with special focus on the cerebellum. A ‘semi-dynamic’ B1+-shimming technique is introduced which provides a tSNR-gain of 29 % and voxels with higher significance in a finger tapping fMRI experiment when comparing the coil combination to a 32ch receive head coil.

This abstract and the presentation materials are available to members only; a login is required.

Join Here