Monte Carlo simulation of the conversion coefficients for Hp(3) and Dp lens for diagnostic X-rays

被引：0

作者：

Teng Z. ^{[1
]}

Song M. ^{[1
]}

Wei K. ^{[1
]}

Hang Z. ^{[1
]}

Geng X. ^{[1
]}

Gao F. ^{[1
]}

Liu Y. ^{[1
]}

Liu S. ^{[1
]}

机构：

[1] National Key Laboratory for Metrology and Calibration Techniques, China Institute of Atomic Energy, Beijing

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2022年 / 43卷 / 11期

关键词：

dose conversion coefficient; dose measurement; EGSnrc; eye lens dosimetry; ICRU95 operational quantity; measurement uncertainty; RQR radiation quality; spectrum analysis;

D O I：

10.11990/jheu.202206037

中图分类号：

学科分类号：

摘要：

To obtain the dose conversion coefficients with small uncertainty of measurement and avoid a complicated energy spectrum analysis process, the Monte Carlo method is used in this study to calculate the conversion coefficients of the operational quantities Hp(3) and Dp lens for diagnostic X-ray radiation fields. The irradiation facility and the calculation phantoms are comprehensively modeled in EGSnrc. For different irradiation conditions, the dose conversion coefficients from air kerma to Hp(3) and Dp lens are then calculated, which are further compared with the spectrum analysis values. The result shows that the maximum relative deviations between the simulated and analytical values of the two conversion coefficients are 3.12% (RQR4, 75°) and 2.91% (RQR4, 90°), respectively, which are within the uncertainties of the analytical values. Moreover, the proposed simulation method is accurate and reliable. The method can help the calibration laboratory obtain the lens dose conversion coefficients with a small uncertainty rapidly, providing technical support for the establishment of the traceability system for relative quantities. © 2022 Editorial Board of Journal of Harbin Engineering. All rights reserved.

引用

页码：1604 / 1610

页数：6

共 24 条

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