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Abstract #1828

Integrated PET/MR: Attenuation Correction and Implementation of a 16-Channel RF-Coil for Breast Imaging

Mark Oehmigen 1 , Maike Lindemann 1 , Titus Lanz 2 , Sonja Kinner 3 , and Harald H. Quick 1,4

1 High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany, 2 Rapid Biomedical GmbH, Rimpar, Germany, 3 Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany, 4 Erwin L. Hahn Institute for MR Imaging, University Duisburg-Essen, Essen, Germany

To implement a 16-channel RF breast coil for PET/MR hybrid imaging, systematic performance tests were realized. The MRI performance was tested using modular PET/MR breast phantoms featuring high resolution MR-visible inserts and PET-visible spheres with various diameters. Signal-to-noise maps and spatial resolution were evaluated. Whereas the coil was designed to minimize the attenuation of PET photons, CT-based attenuation correction of the coil was performed and PET quantification was evaluated in phantom experiments. The RF coil was then tested in PET/MR breast imaging on four breast cancer patients. Attenuation correction enabled correct PET activity quantification in PET/MR phantom and patient studies.

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