https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Optimisation and validation of an integrated magnetic resonance imaging-only radiotherapy planning solution https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45142 Wed 26 Oct 2022 15:43:14 AEDT ]]> Comparison of synthetic computed tomography generation methods, incorporating male and female anatomical differences, for magnetic resonance imaging-only definitive pelvic radiotherapy https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48543 Tue 21 Mar 2023 15:42:15 AEDT ]]> A multi-center prospective study for implementation of an MRI-only prostate treatment planning workflow https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39881 Tue 04 Oct 2022 15:37:28 AEDT ]]> MRI-only treatment planning: benefits and challenges https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47471 Mon 23 Jan 2023 11:05:51 AEDT ]]> Image synthesis for MRI-only radiotherapy treatment planning https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46392 Fri 25 Nov 2022 13:59:19 AEDT ]]> Investigation of a water equivalent depth method for dosimetric accuracy evaluation of synthetic CT https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51714 Fri 15 Sep 2023 17:46:38 AEST ]]> Investigating the generalisation of an atlas-based synthetic-CT algorithm to another centre and MR scanner for prostate MR-only radiotherapy https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33736 1V) and without (sCT) a one voxel body contour expansion included in the algorithm. This was to test whether this expansion was required for 1.5 T images. Both synthetic CT's were rigidly registered to the planning CT (pCT). A 6 MV Volumetric Modulated Arc Therapy plan was created on the pCT and recalculated on the sCT and sCT1V The synthetic CT's dose distributions were compared to the dose distribution calculated on the pCT. The percentage dose difference at isocentre without the body contour expansion (sCT - pCT) was ΔDsCT = (0.9 ± 0.8) % and with (sCT1V-pCT) was ΔDsCT1V = (-0.7 ± 0.7) % (mean ± one standard deviation). The sCT1V; result was within one standard deviation of zero and agreed with the result reported previously using 3 T MR data. The sCT dose difference only agreed within two standard deviations. The mean ± one standard deviation gamma pass rate was ΓsCT = 96.1 ± 2.9% for the sCT and ΓsCT1V = 98.8 ± 0.5% for the sCT1V (with 2% global dose difference and 2 mm distance to agreement gamma criteria). The one voxel body contour expansion improves the synthetic CT accuracy for MR images acquired at 1.5 T but requires the MR voxel size to be similar to the atlas MR voxel size. This study suggests that the atlas-based algorithm can be generalised to MR data acquired using a different field strength at a different centre.]]> Fri 14 Dec 2018 14:42:04 AEDT ]]>