A5034729512- Advanced Radiotherapy Techniques
- Radiation Therapy and Dosimetry
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Nuclear Physics and Applications
- Radiomics and Machine Learning in Medical Imaging
- Radiation Effects and Dosimetry
- Prostate Cancer Diagnosis and Treatment
- Advances in Oncology and Radiotherapy
- bioluminescence and chemiluminescence research
- Digital Radiography and Breast Imaging
- Advanced MRI Techniques and Applications
- Lanthanide and Transition Metal Complexes
- Particle Detector Development and Performance
- Luminescence Properties of Advanced Materials
- AI in cancer detection
- Brain Metastases and Treatment
- Lung Cancer Diagnosis and Treatment
- Laser Design and Applications
Cancer Council Queensland
2015-2024
Icon (Australia)
2018-2023
Queensland University of Technology
2015-2022
Wesley Hospital
2010-2022
City Eye Centre
2018
Medical University of Vienna
2018
Epworth Hospital
2014-2016
Genesis HealthCare
2016
Cancer Australia
2013
Holy Spirit Northside Private Hospital
2012-2013
The Varian Ethos system allows for online adaptive treatments through the utilization of artificial intelligence (AI) and deformable image registration which automates large parts anatomical contouring plan optimization process. In this study, intact prostate bed, with without nodes, were simulated 182 fractions, then a further 184 clinical fractions delivered on system. Frequency magnitude contour edits recorded, as well range quality metrics. From analyzed, 11% AI generated contours, known...
Online adaptive radiation therapy (OART) uses daily imaging to identify changes in the patient's anatomy and generate a new treatment plan adapted these for each fraction. The aim of this study was determine intrafraction motion planning target volume (PTV) margins required an OART workflow on Varian Ethos system.
Abstract Varian (Palo Alto, California, United States) recently released an online adaptation treatment platform, Ethos, which has introduced a new Dose Preview and Automated Plan Generation module despite sharing identical beam data with the existing Halcyon linac. The incorporates preconfigured model Acuros XB algorithm (Ethos AXB model) to generate final dose calculations from initial fluence optimization. In this study, we comprehensively validated accuracy of Ethos by comparing it...
Abstract Contouring has become an increasingly important aspect of radiotherapy due to inverse planning. Several studies have suggested that the clinical implementation automated contouring tools can reduce inter‐observer variation while increasing efficiency, thereby improving quality treatment and reducing time between simulation treatment. In this study, a novel, commercial tool based on machine learning, AI‐Rad Companion Organs RT™ (AI‐Rad) software (Version VA31) (Siemens Healthineers,...
Abstract Background The automated and integrated machine performance check ( MPC ) tool was verified against independent detectors to evaluate its beam uniformity output detection abilities consider it suitable for daily quality assurance QA ). Methods Measurements were carried out on six linear accelerators (each located at individual sites) using clinically available photon electron energies a period up 12 months (n = 350). Daily constancy checks symmetry compared devices such as the SNC...
Purpose: As external beam treatment plans become more dynamic and the dose to normal tissue is further constrained, treatments may consist of a larger number beams, each delivering smaller doses (or monitor units, MU), in, e.g., volumetric modulated arc therapy (VMAT). Electronic portal imaging devices (EPID) be used verify on integrated fractions as well in time dependant manner such field by field. For verification performed during fraction (e.g., individual fields or VMAT control points),...
In this study, the performance of a new iterative reconstruction algorithm, pre-clinical AcurosXB iCBCT has been characterized on Varian Halcyon linear accelerators with respect to potential radiotherapy dose calculations CBCT images. The study utilized various phantom setups verify accuracy algorithm under different scatter conditions and compared performed images reconstructed those typical planning CT results indicated that despite showing improvements existing protocol, certain...
This work is focussed on developing a commissioning procedure so that Monte Carlo model, which uses BEAMnrc's standard VARMLC component module, can be adapted to match specific BrainLAB m3 micro-multileaf collimator (µMLC). A set of measurements are recommended, for use as reference against the model tested and optimized. These include radiochromic film dose from small offset fields, well µMLC transmission interleaf leakage. Simulations obtain scatter factors shown insensitive relevant...
Two diodes which do not require correction factors for small field relative output measurements are designed and validated using experimental methodology. This was achieved by adding an air layer above the active volume of diode detectors, canceled out increase in response fields to standard sizes.Due increased density silicon other components within a diode, additional electrons created. In very fields, gap acts as effective filter with high angle incidence. The aim design that balanced...
Abstract Introduction Stereotactic radiation therapy is a highly specialised technique which requires careful and structured implementation. As part of national stereotactic programme implementation, protocols were developed chart round was formed, strongly recommended attendance presentation all cases before treatment. Herein, we describe our experiences launching its importance in programme. Method rounds held via videoconference between July 2018 2019. Data collected included attendances,...
In this work, a methodology for using smartphone camera, in conjunction with light-tight box operating reflective transmission mode, is investigated as proof of concept use film dosimetry system. An imaging system was designed to allow the camera be used pseudo densitometer. Ten pieces Gafchromic EBT3 were irradiated doses up 16.89 Gy and evaluate effects reproducibility orientation, well ability create an accurate dose response curve based system, all three colour channels. Results compared...
Purpose: To report on an initial investigation into the use of optically stimulated luminescent dosimeters (OSLDs) for in‐vivo dosimetry total body irradiation (TBI) treatments. Specifically, we determination angular dependence, sensitivity correction factors and dose calibration factors. Methods: The OSLD investigated in our work was InLight/OSL nanoDot (Landauer Inc.). Nanodots are 5 mm diameter, 0.2 thick disk‐shaped Carbon‐doped Al2O3, were read using a Landauer InLight microstar reader...