文档介绍：Geant4-based Monte Carlo Simulator for Fan-and
Cone-beam X-ray CT
Jing Zou*1,2, Zhanli Hu1,2, Jianbao Gui1,2, Junyan Rong1,2, Yanming Li1,2, Hairong Zheng*1,2
1 Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering,
Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
2 Key Lab for Biomedical Informatics and Health Engineering, Chinese Academy of Sciences.
* Email: hr.******@siat., jing.******@.
Abstract—An X-puted tomography (CT) simulator X-ray focal spot size, detector size etc not considering
based on Geant4 toolkit was developed for simulation of both fan- plicated physical factors. Also, some factors
and cone-beam CT scanners. There ponents X-ray tube, just like beam-hardening and scatter which result in low-
phantom and detector are simulated. Different to analytical contrast image is analyzed in experiments. This simulator owns
simulation, this simulation is accordance with imaging physics by flexible scanning mode, different instruments and physical
adopting the Geant4 toolkit. Compared with ordinary statistical process can be set properly according to the purpose of
simulation, acceleration investigation and parameters optimization research. Actually, the preliminary work is helpful in system
are considered. Also,experiments on beam-hardenin