High precision axial coordinate readout for an axial 3-D PET detector module using a wave length shifter strip matrix

• DOI: 10.1016/j.nima.2007.06.107
• Publication Date: 2007-07-12T13:28:11Z
• Authors: A. Braem; E. Chesi; C. Joram; J. Séguinot; P. Weilhammer; R. De Leo; E. Nappi; W. Lustermann; D. Schinzel; I. Johnson; D. Renker; S. Albrecht
• Keywords: STRIPS; Lyso-; Axial symmetry; APDS; Matrix (chemical analysis)

We describe a novel method to extract the axial coordinate from a matrix of long axially oriented crystals, which is based on wavelength shifting plastic strips. The method allows building compact 3-D axial gamma detector modules for PET scanners with excellent 3-dimensional spatial, timing and energy resolution while keeping the number of readout channels reasonably low. A voxel resolution of about 10 mm 3 is expected. We assess the performance of the method in two independent ways, using classical PMTs and G-APDs to read out the LYSO (LSO) scintillation crystals and the wavelength shifting strips. We