Modelling of a Bi-Modal PET / Compton-Camera System for Non-Pure Positron Emitters

A. Bolke, M. Zvolsky, N. Kohlhase, S. Seeger, M. Schaar, Magdalena Rafecas


In this work, we investigate the combination of two imaging modalities, positron emission tomography (PET) and Compton-camera (CC) imaging. A prototype for simultaneous PET/CC acquisition was simulated. The design is based on the combination of two existing prototypes and allows for a first investigation of the bi-modal acquisition of the radionuclides 89Zr and 124I. Since the simulation framework GATE is not able to properly output coincidences of such a bi-modal system, a post-processing tool was developed. This includes custom coincidence sorting and classification of PET and CC data. Here we present our postprocessing pipeline as well as our first results, and discuss the implications of the coincidence logic and the fraction of randoms on the data. The availability of such data is the prerequisite for developing novel image reconstruction approaches.
Original languageEnglish
Title of host publication2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
Number of pages3
Publication date11.2020
ISBN (Print)978-1-7281-7694-9
ISBN (Electronic)978-1-7281-7693-2
Publication statusPublished - 11.2020


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