Efficient Monte Carlo simulations in kilovoltage x-ray beams

Hing, Ernesto Mainegra

doi:10.22215/etd/2011-09737

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A In-air: Photon Fluence Spectra and Hvl1

The Bipm Reference Standard For 192 Ir Brachytherapy1

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Cited by 2 publications

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“…For this reason, the original relaxation implementation is left as the default until further testing can be done. 10 The K M-lines of chromium (5.97 keV) and nickel (8.27 keV), and the K L line of nickel (7.46 keV) were unchanged after enabling EADL relaxation data. It is worth mentioning that the atomic transition probabilities contained in the EADL are not without their uncertainties.…”

Section: A In-air: Photon Fluence Spectra and Hvlmentioning

confidence: 96%

Technical Note: Effect of explicit M and N‐shell atomic transitions on a low‐energy x‐ray source

Watson

Seuntjens

2016

Medical Physics

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Section: A In-air: Photon Fluence Spectra and Hvlmentioning

confidence: 96%

Technical Note: Effect of explicit M and N‐shell atomic transitions on a low‐energy x‐ray source

Watson

Seuntjens

2016

Medical Physics

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“…The value presently in use for the energy dependence factor, k en = 1.0020 (15), is derived from the Monte Carlo calcul ations of Mainegra-Hing et al [20], which used graphite stopping powers previously recommended by the ICRU [11] evaluated using I g = 78 eV and the crystalline density 2.265 g cm -3 [21].…”

Section: The Bipm Reference Standard For 192 Ir Brachytherapymentioning

confidence: 99%

Re-evaluation of the BIPM international dosimetry standards on adoption of the recommendations of ICRU Report 90

Burns¹,

Kessler²

2018

Metrologia

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Following the recommendations of ICRU Report 90, a re-evaluation has been made of the BIPM standards for air kerma in x-rays and in 60 Co and 137 Cs γ-radiations, for absorbed dose to water in 60 Co γ-radiation and for reference air-kerma rate in 192 Ir γ-radiation for brachytherapy. The changes arise from three sources: (i) the implementation of new correction factors k ii and k W for free-air ionization chambers; (ii) a re-evaluation of the mean excitation energy for graphite and water and the density effect for graphite; (iii) new stated uncertainties for the value of W air for dry air and for the related product W air s g,air . Consideration has also been given to new recommendations for photon interaction coefficients, although no corresponding changes have resulted. The heat defect in graphite is also considered. A summary table of the combined effect of these changes is presented. The new standards will be implemented on

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Efficient Monte Carlo simulations in kilovoltage x-ray beams

Cited by 2 publications

References 69 publications

Technical Note: Effect of explicit M and N‐shell atomic transitions on a low‐energy x‐ray source

Technical Note: Effect of explicit M and N‐shell atomic transitions on a low‐energy x‐ray source

Re-evaluation of the BIPM international dosimetry standards on adoption of the recommendations of ICRU Report 90

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