Air Kerma to H-P(3) Conversion Coefficients for Exposure of the Human Eye Lens to the Selected Standard X-Ray Beam Qualities
Air kerma to HP(3) conversion coefficients for exp osure of the human eye lens to the selected standard X-RAY beam qualities
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International Commission on Radiological Protection (ICRP) has decreased the annual dose limit for the eye lens from 150 mSv down to 20 mSv for occupational exposures. The operational quantity Hp (3) has been defined for eye lens dosimetry, while cylindrical phantom approximating the shape of a head was suggested for calibration purposes. The aim of the work was to provide a set of conversion coefficients that could contribute to improving the overall quality of eye lens dose assessment. The work investigated the air kerma to Hp(3,iota)conversion coefficients, Hp(3,iota)/Ka (in Sv/Gy), based on Monte Carlo simulations for a standard beam qualities, different angulations and suitable cylindrical phantom. For incident angles iota from 0(o\) to 90(o)., the conversion coefficients Hp(3,iota)/Ka were in the range 0.44-0.88 for N-40, 0.72-1.06 for N-60, 0.91-1.63 for N-80, 1.08-1.52 for N-100, 1.22- 1.62 for N-120 and 0.14-1.56 for N-150 beam quality. The conversion factors Hp(3)/Ka provided... in this work are related to standard beam qualities readily available in the calibration laboratories and are suitable for application in numerous workplace situations in medicine and industry.
Ključne reči:
eye lens / medium energy X-Rays / MCNP5/X / conversion coefficientsIzvor:
RAD Conference Proceedings, 2015, 231-234Finansiranje / projekti:
- Eksperimentalna i teorijska istraživanja u radijacionoj fizici i radioekologiji (RS-MESTD-Basic Research (BR or ON)-171021)
- Zajednička istraživanja merenja i uticaja jonizujućeg i UV zračenja u oblasti medicine i zaštite životne sredine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43011)
Napomena:
- 3rd International Conference on Radiation and Applications in Various Fields of Research (RAD), Jun 08-12, 2015, Budva, Montenegro
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Institucija/grupa
VinčaTY - CONF AU - Krstić, Dragana Ž. AU - Jovanović, Zoran M. AU - Nikezić, Dragoslav AU - Ciraj-Bjelac, Olivera PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7126 AB - International Commission on Radiological Protection (ICRP) has decreased the annual dose limit for the eye lens from 150 mSv down to 20 mSv for occupational exposures. The operational quantity Hp (3) has been defined for eye lens dosimetry, while cylindrical phantom approximating the shape of a head was suggested for calibration purposes. The aim of the work was to provide a set of conversion coefficients that could contribute to improving the overall quality of eye lens dose assessment. The work investigated the air kerma to Hp(3,iota)conversion coefficients, Hp(3,iota)/Ka (in Sv/Gy), based on Monte Carlo simulations for a standard beam qualities, different angulations and suitable cylindrical phantom. For incident angles iota from 0(o\) to 90(o)., the conversion coefficients Hp(3,iota)/Ka were in the range 0.44-0.88 for N-40, 0.72-1.06 for N-60, 0.91-1.63 for N-80, 1.08-1.52 for N-100, 1.22- 1.62 for N-120 and 0.14-1.56 for N-150 beam quality. The conversion factors Hp(3)/Ka provided in this work are related to standard beam qualities readily available in the calibration laboratories and are suitable for application in numerous workplace situations in medicine and industry. C3 - RAD Conference Proceedings T1 - Air Kerma to H-P(3) Conversion Coefficients for Exposure of the Human Eye Lens to the Selected Standard X-Ray Beam Qualities SP - 231 EP - 234 UR - https://hdl.handle.net/21.15107/rcub_vinar_7126 ER -
@conference{ author = "Krstić, Dragana Ž. and Jovanović, Zoran M. and Nikezić, Dragoslav and Ciraj-Bjelac, Olivera", year = "2015", abstract = "International Commission on Radiological Protection (ICRP) has decreased the annual dose limit for the eye lens from 150 mSv down to 20 mSv for occupational exposures. The operational quantity Hp (3) has been defined for eye lens dosimetry, while cylindrical phantom approximating the shape of a head was suggested for calibration purposes. The aim of the work was to provide a set of conversion coefficients that could contribute to improving the overall quality of eye lens dose assessment. The work investigated the air kerma to Hp(3,iota)conversion coefficients, Hp(3,iota)/Ka (in Sv/Gy), based on Monte Carlo simulations for a standard beam qualities, different angulations and suitable cylindrical phantom. For incident angles iota from 0(o\) to 90(o)., the conversion coefficients Hp(3,iota)/Ka were in the range 0.44-0.88 for N-40, 0.72-1.06 for N-60, 0.91-1.63 for N-80, 1.08-1.52 for N-100, 1.22- 1.62 for N-120 and 0.14-1.56 for N-150 beam quality. The conversion factors Hp(3)/Ka provided in this work are related to standard beam qualities readily available in the calibration laboratories and are suitable for application in numerous workplace situations in medicine and industry.", journal = "RAD Conference Proceedings", title = "Air Kerma to H-P(3) Conversion Coefficients for Exposure of the Human Eye Lens to the Selected Standard X-Ray Beam Qualities", pages = "231-234", url = "https://hdl.handle.net/21.15107/rcub_vinar_7126" }
Krstić, D. Ž., Jovanović, Z. M., Nikezić, D.,& Ciraj-Bjelac, O.. (2015). Air Kerma to H-P(3) Conversion Coefficients for Exposure of the Human Eye Lens to the Selected Standard X-Ray Beam Qualities. in RAD Conference Proceedings, 231-234. https://hdl.handle.net/21.15107/rcub_vinar_7126
Krstić DŽ, Jovanović ZM, Nikezić D, Ciraj-Bjelac O. Air Kerma to H-P(3) Conversion Coefficients for Exposure of the Human Eye Lens to the Selected Standard X-Ray Beam Qualities. in RAD Conference Proceedings. 2015;:231-234. https://hdl.handle.net/21.15107/rcub_vinar_7126 .
Krstić, Dragana Ž., Jovanović, Zoran M., Nikezić, Dragoslav, Ciraj-Bjelac, Olivera, "Air Kerma to H-P(3) Conversion Coefficients for Exposure of the Human Eye Lens to the Selected Standard X-Ray Beam Qualities" in RAD Conference Proceedings (2015):231-234, https://hdl.handle.net/21.15107/rcub_vinar_7126 .