Residency Sites
Physics Residents have five sites available to them within Southern Ontario:
- Carlo Fidani Regional Cancer Centre, Trillium Health Partners (Credit Valley Site)
- Durham Regional Cancer Centre, Lakeridge Health
- Princess Margaret Cancer Centre
- Stronach Regional Cancer Centre
- Sunnybrook – Odette Cancer Centre
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Carlo Fidani Regional Cancer Centre, Trillium Health Partners (Credit Valley Site)
Carlo Fidani Regional is located at 2200 Eglinton Ave West in Mississauga. One resident is accepted at this location every two years.

Treatments and Techniques used at Carlo Fidani RCC
External Beam RT (Linac):
- 3D Conformal
- IMRT
- VMAT
- SBRT
- IGRT
- SRS
- DIBH
Brachytherapy:
- HDR
Sites treated: GU, Breast, GI, Lung, Gynae, Skin, lymphoma, CNS and Palliative.
Vendors used at Carlo Fidani RCC
- Six Varian Truebeam Linacs with advanced imaging system: 2 with HD MLC, FFF beams and 6OF couch
- Varian ARIA Radiation Oncology Information System and Eclipse Treatment Planning System
- Brainlab iPlan Stereotactic Radiotherapy treatment planning
- Philips large bore 4D CTSim
- Elekta HDR Brachytherapy (Flexitron 40 Channel afterloader) OncentraBrachy HDR planning
- Elekta Oncentra Prostate (real time US imaging)
- Sun Nuclear ArcCheck, Mapcheck – QA3, Profiler – IBA Dosimetry (Blue phantom water tank)
Research Highlights
- Treatment planning automation, process control and quality assurance in Eclipse TPS
- Treatment outcome and toxicity control for prostate treatment
- Scripting, Deformable registration
- Image QA automation
- Small field Dosimetry
- SRS MLC delivery
- SABR
- FFF
Site Coordinator
Raxa Sankreacha
Contact Information: Raxa.Sankreacha@thp.ca
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Durham Regional Cancer Centre, Lakeridge Health
Lakeridge Health is located at 1 Hospital Court in Oshawa. One resident is accepted at this location every two years.

Treatments and Techniques used at Lakeridge
- IMRT/VMAT/IGRT for external beam Radiation Therapy
- SBRT for lung, bones, kidney, liver, adrenals, spine (linac based VMAT)
- SRS for brain metastases (linac based VMAT and fixed cones)
- Prostate, Gynae and Skin HDR brachytherapy
- Sites treated: GU, Breast, GI, Lung, Gynae, Skin, Lymphoma, Palliative
Vendors used at Lakeridge
- 7 Elekta Linacs (all with 160 MLC, 2 with 6 degrees of freedom couch, 4 with 6FFF beam, 5 with response gating system)
- Elekta HDR (Flexitron)
- Elekta Oncentra (HDR planning)
- Elekta Oncentra Prostate (real time US based prostate HDR)
- Siemens CT simulators (large bore, 40 and 64 slice, 4DCT)
- Siemens MRI (in partnership with hospital)
- Elekta TPS (Monaco)
- Elekta ROIS (Mosaiq)
- Sun Nuclear (ArcCheck, Mapcheck, QA3, Profiler)
- IBA Dosimetry (Blue phantom water tank)
Research Highlights
- Implementation of MRI based interstitial cervix HDR
- Quality improvements for HDR (eg. applicator library, machine learning for needle detection)
- Quality improvement and evaluation of technology implementation (eg. hydrogel spacer, SBRT program expansion, FFF implementation, treatment outcomes analysis, process control for quality assurance)
Site Coordinator
Dr. Katharina Sixel
Contact Information: ksixel@lh.ca
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Princess Margaret Cancer Centre
Princess Margaret is located at 610 University Ave in Toronto. Each year an average of two residents are accepted at this location (four in the program at any one time).

Treatments and Techniques used at Princess Margaret
- External Beam RT (Linac):
- 3D Conformal
- IMRT
- VMAT
- SBRT
- IGRT
- TBI
- Orthovoltage
- Brachytherapy
- Permanent Seed Implant
- PDR
- HDR
- Eye Plaque Program
- Specialized Techniques
- SRS
- MRL (Elekta Unity)
Vendors used at Princess Margaret
- Treatment Planning Systems: Philips (Pinnacle), Varian (BrachyVision), Elekta (Oncentra, Monaco), Raystation
- Linear Accelerators: Varian and Elekta
- SRS: Elekta (Perfexion/GammaKnife)
- Imaging (Simulation): GE, Toshiba, Philips
- HDR: Elekta (Nucletron)
Research Highlights
- IGRT
- Radiomics
- Analysis of Outcomes
- Process Automation
- Treatment Planning Related Research
- Adaptive Radiotherapy
- Deformable Registration and Dose Accumulation
- Automated Planning
- Margin Design
- Automated QC
- Quality Assurance and Safety Related Research
- Small Animal Radiotherapy
- Imaging (PET, SPECT, MR)
- Dosimetry
- Monte Carlo Simulations
- Brachytherapy, including MR-guided brachytherapy
Site Coordinator
Dr. Patricia Lindsay
Contact Information: Patricia.Lindsay@rmp.uhn.ca
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Stronach Regional Cancer Centre
Stronach is located at 596 Davis Drive in Newmarket. Each year, one resident is accepted at this location.

Treatments and Techniques used at Stronach
- Conformal RT for palliative treatment
- IMRT and IGRT for most of radical and some palliative treatment
- VMAT for prostate, esophagus and other sites
Vendors used at Stronach
- Elekta linear accelerators
- Elekta MosaiQ radiation oncology information system
- Philips Pinnacle treatment planning system
- Philips Big Bore CT simulator
Research Highlights
Stronach Regional Cancer Centre is actively engaged in Radiation Medicine research. We are interested in Clinical Physics research as well as research in process improvement. Moreover, we participate in multi-centre clinical trials, and we also initiate local studies to answer specific clinical questions. We have completed a clinical study in which the voluntary breath hold (vBH) technique was compared with the active breathing coordinator (ABC) technique for sparing the heart in treatment of the left breast. As a result, we were able to promptly deploy the vBH technique to replace our standard ABC technique when the COVID-19 pandemic arrived in early 2020. This change of clinical practice was able to eliminate the risk of cross contamination due to the ABC device. In collaboration with the Southlake Cardaic program, we have started a study of SBRT in patients with ventricular tachycardia to investigate the efficacy of this technique especially for patients who have exhausted all conventional treatment options.
Site Coordinator
Dr. Ivan Yeung
Contact Information: iyeung@southlakeregional.org
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Sunnybrook – Odette Cancer Centre
Sunnybrook is located at 2075 Bayview Avenue in Toronto. Each year, on average, two residents are accepted at this location.

Treatments and Techniques used at Sunnybrook
External Beam Radiotherapy:
- MR-Guided Radiotherapy (MR-Linac)
- VMAT , IMRT, 3DCRT
- FFF capability
- IGRT (CBCT or MRI)
- SRS, SBRT, fractionated SRT
- PDT
- Orthovoltage
- I-131 Ablation
- Motion management strategies
Brachytherapy:
- We offer one of the largest brachytherapy programs in North America, treating >500 prostate cases (HDR + LDR) per year and >150 gynecological HDR cases (vaginal vault, intracavitary and interstitial)
- We offer MR image guided HDR for some prostate and gynecological case
- 1.5 T MRI Sim for Brachytherapy adaptive planning
- Cervix HDR brachytherapy is done intra-operatively under MR guidance
- Custom 3D-printed surface moulds are offered for superficial skin and penile cancers
- Current areas of development: Bile duct and Breast HDR
Vendors used at Sunnybrook
- Elekta Unity System (MR-Linac)
- Elekta Gamma Knife
- Elekta Linacs (SLi, Beam Modulators, Agility)
- Elekta MosaiQ
- Elekta Nucletron HDR Remote Afterloader
- Philips 3T MRI Simulator
- Philips 1.5 T Ingenia and Philips 1.5 T Marlin (MR-Linac)
- Philips Wide Bore CT Simulators
- Robotic Couch Technology (Hexapods)
- Varian True beam
- Varian Halcyon
Research Highlights
- Sunnybrook is a founding member of the Elekta MR-Linac Consortium
- MR-Linac associated research and development projects / clinical implementation
- Gamma Knife associated research projects and development
- Brachytherapy innovation
- High Intensity Focused Ultrasound (HIFU)
- Adaptive Radiotherapy associated projects
- Functional imaging research
- Detectors / radiation measurements
- Machine Learning / AI / Automated QA
- Photodynamic therapy
- Treatment Planning projects
- Monte Carlo related research
Site Coordinator
Dr. Brian Keller
Contact Information: Brian.Keller@sunnybrook.ca