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| Study of Calibration the Dosemeter for Measuring Eye Lens Dose in Terms of Hp(3) with Medical Diagnostic X-ray |
| LI Hai-liang1,2, WANG ZHong-wen1, XU Jia-ang2, LI Fu-Sheng2, MIN Nan2 |
1. China Institute of Atomic Energy, Beijing 102413 China;
2. Institute of Radiation Medicine, Shandong Academy of Medical Sciences |
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Abstract Objective To study the application of medical diagnostic X-ray in the dosemeter for measuring eye lens dose in terms of H p(3).Methods The standard for calibration is based on ISO 12794 (2000) and radiation quality for calibration is medical diagnostic X-ray in IEC 61267 (RQR4 RQR7 RQR9).The experimental result is compared with the result calibrated with the narrow beam X-ray(N60~N120) taken from ISO 4037.Results Energy response is 20% < R < 40% for the narrow beam,and-10% < R < 10% for RQR beam. As isotropy,mean the difference of value of the response from the response of normal incidence is(0.99 ±0.08) for the N80,(1.02 ±0.04) for the RQR4,(0.99 ±0.03) for the RQR7,and (0.98 ±0.06) for the RQR9.Conclusion RQR spectra are much wider than N spectra ISO series which better resemble the real spectra at workplaces.Medical diagnostic X-ray (RQR) is more suitable as a radiation quality for calibration the dosimeter.
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Received: 16 March 2016
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