Dose Evaluation of a Car Occupant in Dual Energy X-Ray Automobile Inspection System
Mahdi Kahani* and Samaneh Hashemi
Published: March 29, 2022
Abstract
The aim of this study is to assess the risk of car passengers in Dual Energy X-ray inspection devices and to determine the maximum number of passes through the system in a given amount of time. The MCNPX code was used to simulate a newly fabricated dual-energy X-ray car inspection device, which included an X-ray tube, detector arrays, and a rando phantom, to their exact specifications. A Rando phantom was placed in a car and TLD dosimeters were placed within different sections of the phantom for experimental dosimetry. The maximum equivalent dose was absorbed in the gastric, breast, and lungs in experimental results, while simulation results showed that this quantity belongs to bone surfaces and gastric. Based on simulation results and experimental dosimetry, the total equivalent dose of 155 kVp is 0.256 and 0.276 Sv, respectively, with a difference of 7%. The results showed that the MCNPX is suitable for dosimetry in this case. The system falls into the category of devices of limited utility, according to the ANSI standard. Anyone can move through this machine a maximum of 806, 66, and 15 times in a year, month, and week.
.