Stephen Steciw

Area of Study / Keywords

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About

Dr. Stephen Steciw is currently appointed as Associate Professor in the Department of Oncology in the Faculty of Medicine & Dentistry.

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Research

MR-Linac: Magnetic Interference
Real-time image-guided adaptive radiotherapy (RTIGAR) is being explored at the Cross Cancer Institute by coupling a 0.2 T biplanar permanent-magnet MRI to a linear accelerator. My research involves using finite element analysis and other specialized software to study the effects of the magnetic interference from the MRI system on the production of an x-ray beam intended for use in radiotherapy. I am also investigating passive and active shielding methods to eliminate the effects of this magnetic interference.

EPID Modeling and Dosimetry
My research interests also include dosimetric modeling of EPIDs for exit-beam and IMRT verification. Monte Carlo modeling, with the addition of lag and ghosting correction algorithms are being investigated to improve the dosimetric response derived from the EPID.

ONCOL 562 - Theory of Medical Imaging

A system theory approach to the production, analysis, processing and reconstruction of medical images. An extensive use of Fourier techniques is used to describe the processes involved with conventional radiographic detectors, digital and computed radiography. Review and application of image processing techniques used in diagnostic and therapeutic medicine. Consent of Department required.

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