Mainz 2014 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 3: Biomedical Imaging II
ST 3.4: Vortrag
Dienstag, 25. März 2014, 17:30–17:45, RW 2
Quality assurance and integration of a new Positron Emission Tomography detector — •Daniele Cortinovis1,2, Erika Garutti2, Alessandro Silenzi1, Chen Xu1,2, and Milan Zvolsky1,2 — 1DESY Hamburg — 2Hamburg University
The PicoSEC-MCNet Project (PICOsecond Siliconphotomultiplier-Electronics- & Crystal research-Marie-Curie-Network) aims to develop a new class of ultra-fast photon detectors for High Energy Physics (HEP) and Positron Emission Tomography (PET). This actual technology development is covered in the EndoTOFPET-US project. A new Time Of Flight PET detector will improve the diagnosis capability of pancreatic and prostate tumors with unprecedented spatial resolution. The detector consists of two parts: a PET head mounted on an ultrasound probe and an external plate. Photons are detected by scintillating crystals individually readout by silicon photomultipliers (SiPMs). Their fast response allows to meet the critical requirement of at least 200 ps (FWHM) coincidence time resolution, essential for efficient background rejection. DESY together with Hamburg University are responsible for the quality assurance and integration of the whole system. This talk will present results on the characterization of the 4096 channels of the external PET plate. The SiPMs (MPPC 4x4 matrices) are first checked then the crystal matrices are glued to the crystals and the light yield of the combined system is measured on a dedicated set-up. Finally, the integration with the dedicated readout ASIC (STiC, devoleped at KIP Heidelberg) will be presented.