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计量学报  2018, Vol. 39 Issue (6A): 148-    DOI: 10.3969/j.issn.1000-1158.2018.z1.32
  电离辐射、标准物质与生物计量 本期目录 | 过刊浏览 | 高级检索 |
中能X射线水吸收剂量量值复现方法研究
樊松1,吴金杰1,王坤1,王志鹏1,2,赵瑞1
1.中国计量科学研究院,北京100029
2.北京交通大学,北京100044
Research on Measurement System for Medium-energy X-rays Absorbed Dose to Water
FAN Song1,WU Jin-jie1,WANG Kun1,WANG Zhi-peng1,2,ZHAO Rui1
1. National Institute of Metrology, Beijing 100029, China
2. Beijing Jiaotong University, Beijing 100044, China
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摘要 中能X射线应用于癌症的辐射诊断和深、浅层肿瘤的治疗,而X射线沉积在人体内的辐射剂量用水吸收剂量表征。现有的中能X射线水吸收剂量的测量方法有量热法、电离法和化学剂量法,水量热法是通过测量某种辐射射束在水中的能量沉积引起的温升来确定其水吸收剂量。为了测量中能X射线水吸收剂量,建立了100~220kV下的5个治疗水平X射线辐射质,用空腔圆柱型水量热计直接测量了各辐射质下的水吸收剂量。初步实现了中能X射线水吸收剂量的量值复现,为建立中能X射线水吸收剂量基准或标准装置提供了基础。
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樊松
吴金杰
王坤
王志鹏
赵瑞
关键词 计量学水吸收剂量中能X射线水量热计水箱模体    
Abstract:Medium-energy X-rays are mainly used for radiation diagnosis of cancer and radiotherapy of deep or superficial tumors. Absorbed dose to water is characterized by the physical quantity that X-rays are deposited in the human body. Three are currently three methods for measuring absorbed dose to water of X-rays, such as calorimetry, ionization and chemical dosing. The hydrothermal method is to determine the dose absorbed to water by measuring the temperature rise caused by the energy deposition of radiation beams in water. In order to measure the medium-energy X-ray water absorption dose, five X-ray radiation matters of (100~220) kV for radiotherapy were established, and the dose absorbed to water under each radiation was directly measured by a cavity cylindrical hydrocalorimeter. The method initially realizes the absolute measurement of the dose absorbed to water for the medium energy X-rays, and provides a basis for establishing the dose absorbed to water of the medium energy X-rays primary or second standard device.
Key wordsmetrology    absorbed dose to water    medium-energy X-rays    water calorimeter    phantastic
    
PACS:  TB98  
基金资助:中国计量科学研究院基本科研业务费(AKYCX1809)
通讯作者: 吴金杰为本文通讯作者。wujj@nim.ac.cn   
作者简介: 樊松(1991-),女,山西运城人,中国计量科学研究院在读研究生,研究方向为X射线计量学。 fansong@nim.ac.cn
引用本文:   
樊松,吴金杰,王坤,王志鹏,赵瑞. 中能X射线水吸收剂量量值复现方法研究[J]. 计量学报, 2018, 39(6A): 148-.
FAN Song,WU Jin-jie,WANG Kun,WANG Zhi-peng,ZHAO Rui. Research on Measurement System for Medium-energy X-rays Absorbed Dose to Water. Acta Metrologica Sinica, 2018, 39(6A): 148-.
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