Search

Spring 2013

Burke, Benjamin

Real-time MR imaging of the cancer patients undergoing external beam radiation treatment represents the next generation in image guided radiotherapy. However, the radio frequency (RF) coil of the MRI is exposed to the pulsed radiation of the linear accelerator in the systems where a medical...

Spring 2017

Yip, Eugene

Hybrid magnetic resonance imaging (MRI) and radiation therapy devices are capable of imaging in real-time to track intrafractional lung tumour motion during radiotherapy. In the real time tumour tracking treatment scheme, MR images are acquired in real time, then the tumour target is localized...

Fall 2011

Ghila, Andrei Dorin

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...

Spring 2014

Paudel, Moti R

High density/high atomic number metallic objects create shading and streaking metal artifacts in the CT image that can cause inaccurate delineation of anatomical structures or inaccurate radiation dose calculation. We developed techniques for reducing metal artifacts in both megavoltage CT...

Spring 2010

Kirvan, Paul Francis

Megavoltage computed tomography (MVCT) and megavoltage cone beam computed tomography can be used for visualizing anatomical structures prior to radiation therapy treatments to assist in patient setup and target localization. These systems provide images using the same beam used for patient...

Spring 2012

Yip, Eugene

The aim of this work is to evaluate the feasibility of low field MR based real time lung tumour tracking, a promising application of proposed linac-MR system. In this work, motion phantoms replicating low field MR contrast parameters for thoracic anatomy of lung cancer patients are imaged with...