Monte Carlo simulation of a cone-beam CT system for lightweight casts  

作　　者：Thuy Duong Tran Ngoc Ha Bui Kim Tuan Tran Ngoc Toan Tran 

机构地区：[1]Department of Nuclear Engineering and Environmental Physics,School of Engineering Physics,Hanoi University of Science and Technology,01 Dai Co Viet,Hai Ba Trung,Hanoi,Vietnam [2]Vietnam Atomic Energy Institute,59 Ly Thuong Kiet,Hoan Kiem,Hanoi,Vietnam

出　　处：《Radiation Detection Technology and Methods》2021年第4期504-512,共9页辐射探测技术与方法（英文）

基　　金：The work presented in this paper has been funded by the Vietnamese Ministry of Science&Technology,Contract Number KC.05.18/16-20.

摘　　要：Cone-beam computed tomography(CBCT),a modern technique with many applications,is becoming increasingly important and essential in many areas of economics and life.CBCT equipment has been commercialized in both hardware and software.However,having a device system suitable for a specific group of objects will be the best.This work used Monte Carlo simulation to optimize the design of a Cone-beam Computed Tomography(CBCT)for lightweight and small-size casts.Factors affecting image quality such as radiation-source,flat-panel detector,and geometrical distance were investigated.Simulation results indicate that an X-ray generator with a focal spot size of 4×4µm^(2),high voltage of 240 kV,and a radiation intensity of 10^(13) photon/s with a flat panel CsI(Tl)detector of 0.3 mm thickness and a pixel size of 0.1–0.2 mm,is suitable for a CBCT to inspect small objects in industry.The Monte Carlo model was validated against experiments and to evaluate some characteristics of the existing system.

关 键 词：Cone-beam computed technology Monte Carlo simulation Lightweight casts in industry Applied radiation 

分 类 号：TL7[核科学技术—辐射防护及环境保护]