Social and Behavioral Sciences Commons^™

The Australian Mri-Linac Program: Measuring Profiles And Pdd In A Horizontal Beam, Jarrad Begg, Armia George, Sarah Alnaghy, Trent Causer, T Alharthi, L Glaubes, Bosheng Dong, Gary Goozee, Gary P. Liney, Lois C. Holloway, Paul J. Keall

Faculty of Engineering and Information Sciences - Papers: Part A

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 …