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The Focus 220 (Siemens) is a Positron emission tomography (PET) scanner suitable for small animals but with a gantry large enough to accommodate also larger animal models. 18F-labeled PET tracers for various applications, including brain imaging (e.g. for visualization of amino acid transmitters or protein deposits) and cancer imaging (e.g. prostate cancer imaging) are available. The system is owned and operated by the Institute of Radiochemistry andExperimental Molecular Imaging and the Clinic of Nuclear Medicine. Please contact Prof. Dr. Heike Endepols for further questions.