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Derivation of Australian diagnostic reference levels for paediatric multi detector computed tomography
Springer Science and Business Media LLC - Tập 39 Số 3 - Trang 615-626 - 2016
Anna Hayton, Anthony Wallace
An inter-centre statistical scale standardisation for quantitatively evaluating prostate tissue on T2-weighted MRI
Springer Science and Business Media LLC - Tập 42 - Trang 137-147 - 2019
Neda Gholizadeh, Todsaporn Fuangrod, Peter B. Greer, Peter Lau, Saadallah Ramadan, John Simpson
Magnetic resonance images (MRI) require intensity standardisation if they are used for the purpose of quantitative analysis as inherent variations in image intensity levels between different image sets are manifest due to technical factors. One approach is to standardise the image intensity values using a statistically applied biological reference tissue. The aim of this study is to compare the pe...... hiện toàn bộ
The effect of leaf width and sampling distance on the “stair-stepping” of field borders defined by multileaf collimators
Springer Science and Business Media LLC - Tập 26 - Trang 44-51 - 2003
P. B. Greer, W. A. Beckham
Standard multileaf collimators (MLCs) are now available with 1.0 and 0.5 cm leaf widths. The aim of this work is to compare the dose-undulation and effective penumbra of field edges formed by these MLC leaf widths and to determine how reducing the sampling distance (centre-to-centre distance between adjacent MLC leaves) for the 1.0 cm leaf width compares to the smaller leaf width. The undulation o...... hiện toàn bộ
Linear-accelerator X-ray output: a multicentre chamber-based intercomparison study in Australia and New Zealand
Springer Science and Business Media LLC - Tập 31 - Trang 268-279 - 2008
M. A. Ebert, S. J. Howlett, K. Harrison, D. Cornes, C. S. Hamilton, J. D. Denham
This paper describes the process and results of a survey of linear accelerator outputs as part of an Australasian Level III Dosimetry Intercomparison. This study involved the measurement of accelerator output under reference conditions (‘Level I’) with a small-volume ionisation chamber in water for 47 beams at 36 radiotherapy centres using the IAEA TRS 398 dose-to-water protocol. The mean ratio of...... hiện toàn bộ
The effective atomic number of dosimetric gels
Springer Science and Business Media LLC - Tập 31 - Trang 131-138 - 2008
M. L. Taylor, R. D. Franich, J. V. Trapp, P. N. Johnston
Radiological properties of gel dosimeters and phantom materials are often compared against each other and against water or tissue by consideration parameters including their effective atomic number, Zeff. Effective atomic numbers have been calculated for a range of ferrous-sulphate and polymeric gel dosimeters using mass attenuation coefficient data over the energy range 10 keV to 10 MeV. Data is ...... hiện toàn bộ
Analysis of patient breast dose from a mammographic biopsy unit
Springer Science and Business Media LLC - Tập 42 - Trang 193-199 - 2019
Donald McLean, Lewis Ryan, Lisa Robertson
Further assessment of suspicious lesions found during asymptomatic breast cancer screening is critical and involves mammographic follow up with biopsy. The X-ray procedure is complex and variable in nature and until now there is little information on the radiation dose to the breast or associated risks. A survey of radiation doses from a Siemens MammoTest prone biopsy with the support of a Sectra ...... hiện toàn bộ
Issues encountered with kilovoltage x-ray reference dosimetry when changing codes of practice from TRS 277 to TRS 398
Springer Science and Business Media LLC - Tập 32 - Trang 11-15 - 2009
E. Jhala, B. Steer, J. Laban, L. Greig
A difference of 12 % has been observed in the output of an 80 kV, 2.2 mm Al HVL x-ray beam when comparing measurements made according to the TRS 398 medium energy protocol with measurements made according to the TRS 277 low energy protocol. Absorbed dose to water chamber calibration factors used for the TRS 398 measurements were derived from standards of air kerma with the use of the TRS 277 mediu...... hiện toàn bộ
Acknowledgement of Reviewers for Volume 34
Springer Science and Business Media LLC - Tập 34 Số 4 - Trang 649-650 - 2011
The effect of fluorescence on surface dose with superficial X-rays incident on tissue with underlying lead
Springer Science and Business Media LLC - - 2019
John Baines, Sylwia Zawlodzka, Timothy S. Markwell, Millicent Chan
Women in medical physics: a preliminary analysis of workforce and research participation in Australia and New Zealand
Springer Science and Business Media LLC - Tập 39 Số 2 - Trang 525-532 - 2016
Scott Crowe, Tanya Kairn
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