KIP-Veröffentlichungen

Jahr 2008
Autor(en) Gottlich, Martin Garutti, Erika Kozlov, Valentin Schultz-Coulon, Hans-Christian Tadday, Alexander Terkulov, Adel
Titel Application of Multi-Pixel Photon Counter to Positron Emission Tomography
KIP-Nummer HD-KIP 08-49
KIP-Gruppe(n) F11
Dokumentart Paper
Quelle IEEE-NSS 2008, Dresden, Germany, 2008
Abstract (en)

The Multi-Pixel Photon Counter (MPPC) is a silicon based photon counting device consisting of multiple Avalanche Photodiodes operated in Geiger mode. In order to detect 511 keV photons we use MPPC devices with an active area of 3×3 mm2 which are directly coupled to 3 × 3 × 15 mm3 scintillator crystals made of Lutetium Fine Silicate (LFS). Two gammadetectors of this kind are used to detect both coincident photons emerging from an e+e− annihilation. The energy and the time resolution are measured. The very good performance of the gamma-detectors motivate the next step towards building a gamma camera consisting of a matrix of MPPC devices and scintillator crystals. First results concerning the design and the homogeneity of the read-out channels are presented. About 100 LFS crystals are tested. First studies on the properties of the ASIC which will be used for the multi-channel read-out are discussed. The experimental studies are supplemented with Monte Carlo simulations based on GEANT4. A full PET system is simulated in order to study and optimize the performance of the system in terms of spatial resolution.

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