Dose estimation of X-ray radiography based on Chinese pediatric reference phantoms
10.3760/cma.j.issn.0254-5098.2021.05.008
- VernacularTitle:基于中国儿童参考体模的X射线摄影剂量评估
- Author:
Ruiyao MA
1
;
Rui QIU
;
Li REN
;
Zhen WU
;
Ankang HU
;
Junli LI
;
Chunyan LI
;
Haikuan LIU
;
Weihai ZHUO
Author Information
1. 清华大学工程物理系 粒子技术与辐射成像教育部重点实验室，北京 100084
- Keywords:
Pediatric phantom;
X-ray radiography;
Monte Carlo;
Radiation dose
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(5):363-367
- CountryChina
- Language:Chinese
-
Abstract:
Objective:The Chinese pediatric mesh-type reference phantoms were developed and applied in the dose assessment of X-ray radiography.Methods:The 5- and 10-year-old Chinese pediatric mesh-type reference phantoms were developed based on the CT data. Based on the phantoms, the Monte Carlo method was applied to simulate the X-ray radiography to calculate the organ dose conversion coefficient and the effective dose conversion coefficient in different radiography conditions.Results:The 5- and 10-year-old Chinese pediatric mesh-type reference phantoms were developed, and the physical parameters were consistent with the national standard. The differences of the organ mass between the established phantoms and reference data were within 2%. The database of the pediatric chest posteroanterior projection and abdominal anteroposterior projection, tube voltage 60-90 kVp, total filtration 2.5~4 mmAl were simulated, and the difference between the effective dose conversion factor and the literature result was within 3%.Conclusions:The established Chinese pediatric mesh-type reference phantoms can be applied in the studies of radiation protection and clinical medicine and their result can provide an important reference for the dose assessment of the pediatric X-ray radiography.
