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| Study of Calibration the Dosemeter for Measuring Eye Lens Dose in Terms of HP(3) with Different Phantom |
| LI Hai-liang1,2, WANG Zhong-wen1, ZHU Jian-guo2, XU Jia-ang2, YANG Ying-xiao2, ZHANG Lin2, LI Fu-shen2 |
1. China Institute of Atomic Energy, Beijing 102413 China;
2. Institute of Radiation Medicine, Shandong Academy of Medical Sciences, Jinan 250062 China |
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Abstract Objective To calibrate the dosemeter for measuring eye lens dose in terms of HP (3) and study the performance of the dosemeter,such as batch homogeneity,detection threshold,linearity,energy response,isotropy.Methoods The standard for calibration is based on ISO 12794(2000),phantoms are slab phantom and cylindrical phantom,radiation quality is the narrow beam X-ray (N60~N120) taken from ISO 4037.Results The performance of the dosemeter,as batch homogeneity,the coefficient of variation is 5.7%.The detection threshold is less than 0.1 mSv.As linearity,for two phantoms,response are both less than 10%.The energy responses to both phantoms,are in the range of 20%~40%.As isotropy,mean value of the response differ from the response of normal incidence is (1.05±0.03) for the slab phantom,and (0.99±0.08) for the cylindrical phantom.Conclusion For selected experimental conditions,both phantoms are suitable for eye lens dosemeter calibration,the calibration results conform to the requirements of ISO 12794,the dosemeter is suitable for using in interventional radiology.
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Received: 21 January 2016
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