A new scintillation detector system has been designed for application in high resolution positron emission tomography (PET). The detector is a bundle of small YAlO3:Ce (YAP) crystals closely packed (0.2×0.2×3.0 cm3), coupled to a position sensitive photomultiplier tube (PSPMT). The preliminary results obtained for spatial resolution, time resolution, energy resolution and efficiency of 2 such detectors working in coincidence are presented. These are 1.2 mm for the FWHM spatial resolution, 2.0 ns for the FWHM time resolution and 20% for the FWHM energy resolution at 511 keV. The measured efficiency is (44±3)% with a 150 keV threshold and (20±2)% with a 300 keV threshold
Use of a YAP:Ce matrix coupled to a Position-Sensitive Photomultiplier for high resolution Positron Emission Tomography
DEL GUERRA, Alberto;DI DOMENICO, Giovanni;GIGANTI, Melchiore;PIFFANELLI, Adriano;ZAVATTINI, Guido
1996
Abstract
A new scintillation detector system has been designed for application in high resolution positron emission tomography (PET). The detector is a bundle of small YAlO3:Ce (YAP) crystals closely packed (0.2×0.2×3.0 cm3), coupled to a position sensitive photomultiplier tube (PSPMT). The preliminary results obtained for spatial resolution, time resolution, energy resolution and efficiency of 2 such detectors working in coincidence are presented. These are 1.2 mm for the FWHM spatial resolution, 2.0 ns for the FWHM time resolution and 20% for the FWHM energy resolution at 511 keV. The measured efficiency is (44±3)% with a 150 keV threshold and (20±2)% with a 300 keV thresholdI documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
