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Skip to Search Results- 1Anderson, Danielle L.
- 1Ghila, Andrei D
- 1Ghila, Andrei Dorin
- 1Johnson, Neil Wallace
- 1Keyvanloo Shahrestanaky, Amirmohamad
- 1Liu, Derek MC
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Accurate Dosimetry for Ocular Brachytherapy: Measurement, Delivery Uncertainty, and Dose Calculation Studies
DownloadFall 2017
Ocular brachytherapy has been found to be an excellent alternative for the treatment of ocular melanomas compared to the predominantly used treatment prior to the 1980s of enucleation. Tumour control rates are generally >90%, overall survival rates are equivalent to enucleation, and ocular...
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Fall 2012
A radiation detector geared towards megavoltage external beam radiotherapy has been developed using a liquid scintillator and a charge coupled device (CCD). The liquid scintillator used is BetaMax ES (MP Biomedicals, Santa Ana, CA) and the CCD comes from an SPC880NC webcam (Royal Philips...
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Fall 2015
With the advent and development of hybrid Linac-MR technology, we will be able to track and treat lesions in real time. This will permit the narrowing of radiotherapy margins and escalation of dose, augmenting the therapeutic outcome of radiotherapy. The addition of a magnetic field to the...
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Dosimetry and Biological Studies for Microbeam Radiation Therapy at the Canadian Light Source
DownloadFall 2015
Microbeam radiation therapy (MRT) is a pre-clinical type of radiation therapy that uses an array of high-dose microbeams to treat solid tumours. An intense, quasi-parallel synchrotron beam is collimated to create microbeams several 10s of μm wide, and separated by 100s of μm. Animal studies...
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Fall 2022
Dynamic tumour-tracked radiotherapy is a promising method for delivering conformal doses to tumours that exhibit a large degree of motion as a result of patient respiration. However, there exists an inevitable latency between the acquisition of an image of a moving tumour and the adaptation of...
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Fall 2016
The integration of clinical linear accelerators (linacs) with magnetic resonance imaging (MRI) systems represent the next generation of image guidance technologies in radiotherapy. Linac-MR systems have several potential advantages over the current X-ray based state-of-the-art image guidance...
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Fall 2011
The integration of a clinical linear accelerator (linac) with a magnetic resonance imager (MRI) will offer real time images during treatment, making tumor tracking possible. One of the challenges of the integration is removing any mutual interference between the two systems. Methods of removing...
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Fall 2014
The dissertation explores some of the limitations and assumptions in the current approach to permanent prostate brachytherapy (PPB) dosimetry. Where possible, novel insights and practical improvements are proposed, which aim to enhance the accuracy of radiation dose delivery during treatment. The...
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Skin Dose in Longitudinal and Transverse Linac-MRIs using Monte-Carlo and realistic 3D MRI field models
DownloadSpring 2013
Keyvanloo Shahrestanaky, Amirmohamad
The integration of a clinical linear accelerator (linac) with a magnetic resonance imaging (MRI) system would provide real-time tumor tracking. The magnetic fields of linac-MR systems modify the path of contaminant electrons in photon beams, which alters patient skin dose. In this work, we used...
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Fall 2018
Magnetic resonance imaging (MRI) can visualize solid tumours in real time and its integration with a linear accelerator offers the possibility to track tumours during irradiation. However, irradiating a patient inside a linac-MR poses several challenges. MRI uses radiofrequency (RF) coils to...