The Australian MRI-Linac Program: measuring profiles and PDD in a horizontal beam

The Australian MRI-Linac Program: measuring profiles and PDD in a horizontal beam

The Australian MRI-Linac consists of a fixed horizontal photon beam combined with a MRI. Commissioning required PDD and profiles measured in a horizontal set-up using a combination of water tank measurements and gafchromic film. To validate the methodology, measurements were performed comparing PDD...

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Veröffentlicht in:Journal of physics. Conference series 2017-02, Vol.777 (1), p.12035
Hauptverfasser: Begg, J, George, A, Alnaghy, S J, Causer, T, Alharthi, T, Glaubes, L, Dong, B, Goozee, G, Liney, G, Holloway, L, Keall, P
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Commissioning
Photon beams
Physics
Water tanks
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container_issue 1
container_start_page 12035
container_title Journal of physics. Conference series
container_volume 777
creator Begg, J
George, A
Alnaghy, S J
Causer, T
Alharthi, T
Glaubes, L
Dong, B
Goozee, G
Liney, G
Holloway, L
Keall, P
description The Australian MRI-Linac consists of a fixed horizontal photon beam combined with a MRI. Commissioning required PDD and profiles measured in a horizontal set-up using a combination of water tank measurements and gafchromic film. To validate the methodology, measurements were performed comparing PDD and profiles measured with the gantry angle set to 0 and 90° on a conventional linac. Results showed agreement to within 2.0% for PDD measured using both film and the water tank at gantry 90° relative to PDD acquired using gantry 0°. Profiles acquired using a water tank at both gantry 0 and 90° showed agreement in FWHM to within 1 mm. The agreement for both PDD and profiles measured at gantry 90° relative to gantry 0° curves indicates that the methodology described can be used to acquire the necessary beam data for horizontal beam lines and in particular, commissioning the Australian MRI-linac.
doi_str_mv 10.1088/1742-6596/777/1/012035
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subjects Commissioning
Photon beams
Physics
Water tanks
title The Australian MRI-Linac Program: measuring profiles and PDD in a horizontal beam
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