在诊断放射学中测定入口表面剂量（ESD）的CaF2:Mn剂量计的性能

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2025-03-14 DOI:10.1016/j.radmeas.2025.107419

Engin Aşlar , Vural Emir Kafadar

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引用次数: 0

摘要

研究了CaF2:Mn （TLD-400）作为放射诊断学中包括入口表面剂量测量（ESD）的剂量测量仪的性能。具体来说，在诊断能量范围内，研究了荧光粉的能量依赖性、剂量响应和热释光信号的可重复性。剂量计在诊断能量范围内的TL响应比其对137Cs （662 keV）的响应高10倍左右。无论用于CaF2:Mn辐照的x射线能量如何，TL响应随剂量线性增加。重复使用7次的CaF2:Mn芯片的TL响应变化在5%以内。用CaF2:Mn测量的入口表面剂量（ESD）与用TLD-100测量的结果一致。该剂量计的特点表明，它既可用于诊断放射学中的人员剂量测定，也可用于患者剂量测定。

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Performance of CaF2:Mn dosimeters for determining entrance surface dose (ESD) in diagnostic radiology

The performance of CaF₂:Mn (TLD-400) as dosimeters for dose measurements in diagnostic radiology including for entrance surface dose measurements (ESD) was investigated. Specifically, energy dependence, dose response, and repeatability properties of the thermoluminescence (TL) signal of the phosphor in diagnostic energy range were examined. The TL response of the dosemeter in the diagnostic energy range is about a factor of 10 more than its response to ¹³⁷Cs (662 keV). Irrespective of the energy of the X-rays used for CaF₂:Mn irradiation, TL response increased linearly with dose. Variation in TL responses of a chip of CaF₂:Mn reused seven times was within 5%. Entrance surface dose (ESD) measured with CaF₂:Mn are in agreement with those measured using TLD-100. The dosimeter's characteristics show that it can be used for both personnel and patients' dosimetry in diagnostic radiology.

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来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.