ABSTRACT

This research was conducted to evaluate scatter distribution at an X-ray room for diagnostic radiography using the Particle and Heavy Ion Transport code System (PHITS). The X-ray room was simulated using PHITS code based on the imaging room distance and length, as well as the control console room. The exact dimensions of the rooms were used as a geometry code in PHITS to simulate a point source isotopically with 100 keV energy in the X-ray room. There are three sources situated for this study which are source directed to the imaging table, inpatient bed, and Erect Bucky. Results show that PHITS simulation and measurement have a comparable value. The control console room is considered a safe place, based on the activation source from the simulation and measurement of the experimental dose with a dose ranged from 0.0540 to 0.1090 µSv per exposure. The control room is safe to the operator unless the number of cases handled is less than 11,086 cases per year. Comparison of dose distribution based on certain points of measurement and track detection from the simulation showed an approximate result. The dose obtained from the simulation and measurement is within the dose limits recommended by ICRP-60.

摘要

进行了这项研究，以评估使用粒子和重离子迁移编码系统（PHITS）在X射线检查室进行放射诊断的散射分布。使用PHITS代码根据成像室的距离和长度以及控制台室模拟X射线室。房间的确切尺寸在PHITS中用作几何代码，以在X射线室中以100 keV能量同位素模拟点源。本研究有三部分资料，分别针对成像台，住院病床和勃起的巴基。结果表明，PHITS仿真和测量具有可比的价值。基于模拟和测量实验剂量的激活源（每次暴露的剂量范围为0.0540至0.1090 µSv），控制台室被认为是安全的地方。除非每年处理的案件数量少于11086例，否则控制室对操作员是安全的。基于某些测量点的剂量分布比较和来自模拟的跟踪检测显示出近似结果。从仿真和测量获得的剂量在ICRP-60建议的剂量范围内。