Simplified simulation of four-layer depth of interaction detector for PET

TITLE
Simplified simulation of four-layer depth of interaction detector for PET
AUTHORS
Hideaki Haneishi, Masanobu Sato, Naoko Inadama, and Hideo Murayama
SOURCE
RADIOLOGICAL PHYSICS AND TECHNOLOGY 1 (1): 106-114 JAN 1 2008 (doi:10.1007/s12194-007-0017-7)
ABSTRACT
A four-layer depth-of-interaction (DOI) detector was proposed from and developed at the research project at the National Institute of Radiological Sciences in Japan, with the aim of achieving high resolution and high spatial sensitivity. Previously, we had developed a Monte Carlo simulation for a DOI detector with 2 x 2 x 4 crystal elements. In this study, in order to simulate the final version of the DOI detector of the project, which uses a larger number of crystal elements, we have developed a much faster and simpler simulator. In this paper the algorithm of the simplified simulator as well as the previously proposed Monte Carlo method is presented and the validation of the simplified simulator through comparisons with the full Monte Carlo simulation and with some experimental results is described. Fig. 1. Structure of four-layer DOI detector treated in this study. (Left) a fundamental structure. (Right) a vertical cross section of the detector.