Recent results of the TierPET scanner

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Abstract
At the Forschungszentrum Julich a high resolution positron emission tomograph (TierPET) for imaging small laboratory animals, especially rats, has been constructed. The scanner is based on arrays of YAP crystals. As a special feature the detector distances can be varied continuously from 16 to 58 cm. Due to the variable detector distances the performance of the scanner has to be evaluated in various configurations. Special attention was paid to dedicated data acquisition protocols and adequate applications with regard to the system sensitivity.