Evaluation and Integration of a Dual-Tuned 13C/1H Headcoil into PET/MR Hybrid Imaging
Mark Oehmigen1, Maike E. Lindemann1, Michael Sauer2, Titus Lanz2, and Harald H. Quick1,3
1High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany, 2Rapid Biomedical GmbH, Rimpar, Germany, 3Erwin L. Hahn Institute for MR Imaging, University Duisburg-Essen, Essen, Germany
A
dual tuned 13C/1H radiofrequency head coil was evaluated
towards its potential use in integrated PET/MR hybrid imaging. The amount of
PET-signal attenuation due to the head coil was quantified in phantom
experiments. A CT-based 3D template ยต-map of the hardware components was
generated and evaluated for attenuation correction (AC). The head coil
homogeneously attenuates the PET signal by 10%. Attenuation correction
homogeneously reduced this attenuation bias to below 1%. These results were
confirmed in PET/MR measurements of six patients. The RF head coil was
successfully integrated into PET/MR hybrid imaging and can now be used for multinucleus
hybrid imaging.
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