TY  - JOUR
AU  - Beltrame, P. et al
AU  - Oliver, J. F.
AU  - Rafecas, M.
AU  - Solevi, P.
PY  - 2011
DA  - 2011//
TI  - The AX-PET demonstrator-Design, construction and characterization
T2  - Nucl. Instrum. Methods Phys. Res. A
JO  - Nuclear Instruments & Methods in Physics Research A
SP  - 546
EP  - 559
VL  - 654
IS  - 1
PB  - Elsevier Science Bv
KW  - PET
KW  - Axial geometry
KW  - Geiger-mode Avalanche Photo Diodes (G-APD)
KW  - SiPM
AB  - Axial PET is a novel geometrical concept for Positron Emission Tomography (PET), based on layers of long scintillating crystals axially aligned with the bore axis. The axial coordinate is obtained from arrays of wavelength shifting (WLS) plastic strips placed orthogonally to the crystals. This article describes the design, construction and performance evaluation of a demonstrator set-up which consists of two identical detector modules, used in coincidence. Each module comprises 48 LYSO crystals of 100 mm length and 156 WLS strips. Crystals and strips are readout by Geiger-mode Avalanche Photo Diodes (G-APDs). The signals from the two modules are processed by fully analog front-end electronics and recorded in coincidence by a VME-based data acquisition system. Measurements with point-like (22)Na sources, with the modules used both individually and in coincidence mode, allowed for a complete performance evaluation up to the focal plane reconstruction of point sources. The results obtained are in good agreement with expectations and proved the set-up to be ready for the next evaluation phase with PET phantoms filled with radiotracers.
SN  - 0168-9002
UR  - https://doi.org/10.1016/j.nima.2011.06.059
DO  - 10.1016/j.nima.2011.06.059
LA  - English
N1  - WOS:000295765100078
ID  - Beltrame_etal2011
ER  -