Air-kerma to Hp(0.07), Hp(3), and Hp(10) conversion coefficients for monoenergetic photons

Kanti, Hassan Al; Hajjaji, O. El; Bardouni, T. El; Boukhal, H.

doi:10.1016/j.apradiso.2020.109123

Cited by 8 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scattered air KERMA measurements from mobile chest X‐rays published by Brady et al infer that unshielded personnel who are consistently positioned 1 m from the patient are unlikely to exceed the occupational dose limits. 8 Even assuming a maximum air KERMA to DDE conversion, 40 the number of examinations required to exceed the occupational dose limit surpasses the examinations that could be realistically performed in a year. Despite the changes following the COVID‐19 pandemic, it is still unlikely that a radiographer would stand within 1 m of the patient.…”

Section: Discussionmentioning

confidence: 99%

COVID‐19 pandemic and the effect of increased utilisation of mobile X‐ray examinations on radiation dose to radiographers

Yeung

Pinson

Lawson

et al. 2022

J of Medical Radiation Sci

View full text Add to dashboard Cite

Introduction The use of ionising radiation results in occupational exposure to medical imaging professionals, requiring routine monitoring. This study aims to assess the effect of increased utilisation of mobile X‐ray units, mobile imaging of non‐routine body regions and radiographer work practice changes for impact on staff radiation dose during the early stages of the COVID‐19 pandemic. Methods A retrospective analysis of general radiology departments across two metropolitan hospitals was performed. Personal radiation monitor exposure reports between January 2019 and December 2020 were analysed. Statistical analysis was conducted using a Mann–Whitney U test when comparing each quarter, from 2019 to 2020. Categorical data were compared using a Chi‐squared test. Results Mobile X‐ray use during the pandemic increased approximately 1.7‐fold, with the peak usage observed in September 2020. The mobile imaging rate per month of non‐routine body regions increased from approximately 6.0–7.8%. Reported doses marginally increased during Q2, Q3 and Q4 of 2020 (in comparison to 2019 data), though was not statistically significant (Q2: P = 0.13; Q3: P = 0.31 and Q4 P = 0.32). In Q1, doses marginally decreased and were not statistically significant ( P = 0.22). Conclusion Increased utilisation and work practice changes had no significant effect on reported staff radiation dose. The average reported dose remained significantly lower than the occupational dose limits for radiation workers of 20 mSv.

show abstract

Section: Discussionmentioning

confidence: 99%

COVID‐19 pandemic and the effect of increased utilisation of mobile X‐ray examinations on radiation dose to radiographers

Yeung

Pinson

Lawson

et al. 2022

J of Medical Radiation Sci

View full text Add to dashboard Cite

show abstract

“…So, the operational quantities seek to provide a reasonable estimate of the protection quantities. [4][5][6][7][8][9][10] The equivalent dose in the tissue or an organ, H, have given by: 𝐻 = ∑ 𝑤 𝑅 𝐷 𝑇,𝑅 𝑅 Eq .1 Where: DT,R is the main absorbed dose in the specified tissue or organ T from the radiation of type R. wR is the radiation weight factor for neutron given by Equation 2. 11 𝑤 𝑅 = , 𝐸 𝑛 > 50𝑀𝑒𝑉 )…”

Section: Introductionmentioning

confidence: 99%

Neutron conversion coefficients of ambient dose equivalent and personal dose equivalent

Kanti

Hajjaji

Bardouni

et al. 2022

Polish Journal of Medical Physics and Engineering

View full text Add to dashboard Cite

Introduction: This work aims to calculate the ambient and personal dose equivalent conversion coefficients. Material and methods: The conversion coefficients have been calculated using MC simulation. Additionally, this paper proposes a new method that depends on an analytical approach. Results: The obtained results in good agreement between MC and an analytical approach were observed. The obtained results were compared to those published in ICRU 57 report. Conclusions: We deduced that the analytical approach is as effective and suitable as the MC simulation to calculate the operational quantity conversion coefficients.

show abstract

A novel approach towards the calculation of dose rate constants for ambient dose equivalent H∗(10) by including low energy x-rays

Stettner

Baumgartner

Hranitzky

et al. 2021

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Air-kerma to Hp(0.07), Hp(3), and Hp(10) conversion coefficients for monoenergetic photons

Cited by 8 publications

References 11 publications

COVID‐19 pandemic and the effect of increased utilisation of mobile X‐ray examinations on radiation dose to radiographers

COVID‐19 pandemic and the effect of increased utilisation of mobile X‐ray examinations on radiation dose to radiographers

Neutron conversion coefficients of ambient dose equivalent and personal dose equivalent

A novel approach towards the calculation of dose rate constants for ambient dose equivalent H∗(10) by including low energy x-rays

Contact Info

Product

Resources

About