用于热辐射积算仪的 SSDLs 校准方法

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2024-10-15 DOI:10.1016/j.radphyschem.2024.112299

Qian Yang, Shimeng Xu, Jie Fan

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引用次数: 0

摘要

KAP 计主要用于医学成像研究的质量保证，为患者提供剂量质量评估或剂量监测。它可以在实验室或现场进行校准。本研究的目的是提出一种在 SSDL 中使用平面平行透射电离室校准 KAP 计的方法。在 50 kV-150 kV 范围内，在 KAP 计的 RQR（标准辐射质量）和 RQR 附加滤波条件下，计算透射电离室的校正系数 NQm，以选择两种类型的 KAP 计对透射光束进行校准。用于限制辐射场大小的准直器长度分别为 50.07 毫米、30.03 毫米和 20.05 毫米。这种方法的不确定性不超过 3.0%，同时提高了校准效率，可以取代实验室方法的特定单位校正（Toroi 等人，2008 年）。

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An SSDLs calibration method for the kerma-area product meter

The kerma-area product meter (KAP meter) is mainly used for quality assurance in medical imaging research, providing dose quality assessment or dose monitoring for patients. It can be calibrated either in the laboratory or on-site. The purpose of this study is to propose a method for calibrating the KAP meter using a plane-parallel transmission ionization chamber in the SSDLs. In the range of 50 kV–150 kV, under RQR (standard radiation qualities) and RQR additional filtering conditions of the KAP meter, the correction factor

N_{Q}^{m}

of the transmission ionization chamber is calculated to select two types of KAP meters for the calibration of the transmitted beam. The collimators used to limit the size of the radiation field are respectively 50.07 mm in length, 30.03 mm in length, and 20.05 mm in radius. This method, with uncertainty not exceeding 3.0% while improving calibration efficiency, can replace the unit-specific correction of the laboratory method (Toroi et al., 2008).

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.