https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Can the Risk of Dysphagia in Head and Neck Radiation Therapy Be Predicted by an Automated Transit Fluence Monitoring Process During Treatment? A First Comparative Study of Patient Reported Quality of Life and the Fluence-Based Decision Support Metric. https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43534 , weight change ΔW, ΔVROI, and Δϕn, were analyzed using the ranked-Pearson correlation. Results: No statistically significant correlation was found for age, gender and ΔW. was found to have clinically important correlation with functional MDADI (ρ = −0.39, P = 0.081). ΔVROI was found to have statistically significant correlation of 0.44, 0.47 and 0.44 with global, physical and functional MDADI (P-value < 0.05). Δϕn was found to have statistically significant ranked-correlation (−0.46, −0.46 and −0.45) with physical, functional and total MDADI (P-value < 0.05). Conclusion: A transit fluence based decision support metric (DSM) is statistically correlated with the dysphagia risk. It can not only be used as an early signal in assisting clinicians in the ART patient selection for replanning, but also lowers the resource barrier of ART implementation.]]> Wed 21 Sep 2022 11:32:28 AEST ]]> Development of EPID-based real time dose verification for dynamic IMRT https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:15790 Wed 11 Apr 2018 11:33:04 AEST ]]> Real-time radiotherapy error detection using transit beam image processing https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23631 Wed 11 Apr 2018 11:14:33 AEST ]]> Development of EPID-based real-time dosimetry and geometry in radiation therapy https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12635 Wed 11 Apr 2018 09:46:24 AEST ]]> Predictive quality assurance of a linear accelerator based on the machine performance check application using statistical process control and ARIMA forecast modeling https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39845 Tue 19 Jul 2022 08:45:26 AEST ]]> An EPID-based system for gantry-resolved MLC quality assurance for VMAT https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25773 Tue 16 Mar 2021 10:50:09 AEDT ]]> A novel and independent method for time-resolved gantry angle quality assurance for VMAT https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34236 Tue 03 Sep 2019 18:22:44 AEST ]]> A method for evaluating treatment quality using in vivo EPID dosimetry and statistical process control in radiation therapy https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34592 in vivo EPID dosimetry for patients treated at the specific centre. Sampling patients for generating the control limits were limited to 100 patients. Whilst the quantitative results are specific to the clinical techniques and equipment used, the described method is generally applicable to IMRT and VMAT treatment QA. Whilst more work is required to determine the level of clinical significance, the authors have demonstrated the capability of the method for both treatment specific QA and continuing quality improvement. Practical implications: The proposed method is a valuable tool for assessing the accuracy of treatment delivery whilst also improving treatment quality and patient safety. Originality/value: Assessing in vivo EPID dosimetry with SPC can be used to improve the quality of radiation treatment for cancer patients.]]> Thu 28 Oct 2021 12:37:07 AEDT ]]> Investigation of a real-time EPID-based patient dose monitoring safety system using site-specific control limits https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29628 Thu 27 Jan 2022 15:55:44 AEDT ]]> Toward real-time verification for MLC tracking treatments using time-resolved EPID imaging https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48039 Error). For simulated field size errors, the RMSError was 0.47 cm2 and field shape changes were detected for random errors with standard deviation ≥ 2.5 mm. For clinical lung SABR deliveries, field location errors of 1.6 mm (parallel MLC motion) and 4.9 mm (perpendicular) were measured (expressed as a full-width-half-maximum). The mean and standard deviation of the errors in field size and shape were 0.0 ± 0.3 cm2 and 0.3 ± 0.1 (expressed as a translation-invariant normalized RMS). No correlation was observed between geometric errors during each treatment fraction and dosimetric errors in the reconstructed dose to the target volume for this cohort of patients. Conclusion: A system for real-time delivery verification has been developed for MLC tracking using time-resolved EPID imaging. The technique has been tested offline in phantom-based deliveries and clinical patient deliveries and was used to independently verify the geometric accuracy of the MLC during MLC tracking radiotherapy.]]> Thu 23 Mar 2023 10:25:03 AEDT ]]> An inter-centre statistical scale standardisation for quantitatively evaluating prostate tissue on T2-weighted MRI https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38734 Thu 21 Jul 2022 09:53:03 AEST ]]> An independent system for real-time dynamic multileaf collimation trajectory verification using EPID https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21332 Sat 24 Mar 2018 07:52:48 AEDT ]]> First experience with real-time EPID-based delivery verification during IMRT and VMAT sessions https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26356 Sat 24 Mar 2018 07:35:52 AEDT ]]> A cine-EPID based method for jaw detection and quality assurance for tracking jaw in IMRT/VMAT treatments https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22659 Sat 24 Mar 2018 07:15:38 AEDT ]]> Commissioning and quality assurance for VMAT delivery systems: an efficient time-resolved system using real-time EPID imaging https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33870 Mon 21 Jan 2019 10:42:48 AEDT ]]> A system for EPID-based real-time treatment delivery verification during dynamic IMRT treatment https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19934 Fri 20 Jul 2018 15:10:00 AEST ]]> Gantry-angle resolved VMAT pretreatment verification using EPID image prediction https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19933 Fri 10 Nov 2023 15:58:39 AEDT ]]>