Monte Carlo simulation and performance assessment of GE Discovery 690 VCT positron emission tomography/computed tomography scanner

Autor: Vahab Dehlaghi, Raheb Ghorbani, Karim Khoshgard, Elham Kashian, Pardis Ghafarian, Hadi Taleshi Ahangari
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: World Journal of Nuclear Medicine, Vol 19, Iss 4, Pp 366-375 (2020)
World Journal of Nuclear Medicine
ISSN: 1607-3312
1450-1147
Popis: The aim of this study is to simulate GE Discovery 690 VCT positron emission tomography/computed tomography (PET/CT) scanner using Geant4 Application for Tomographic Emission (GATE) simulation package (version 8). Then, we assess the performance of scanner by comparing measured and simulated parameter results. Detection system and geometry of PET scanner that consists of 13,824 LYSO crystals designed in 256 blocks and 24 ring detectors were modeled. In order to achieve a precise model, we verified scanner model. Validation was based on a comparison between simulation data and experimental results obtained with this scanner in the same situation. Parameters used for validation were sensitivity, spatial resolution, and contrast. Image quality assessment was done based on comparing the contrast recovery coefficient (CRC) of simulated and measured images. The findings demonstrate that the mean difference between simulated and measured sensitivity is
Databáze: OpenAIRE
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