Private PET/CT serving Western Canada.
INITIO is Western Canada’s only private PET/CT scan facility. With over 20 years experience, we offer Rapid PET/CT and CT scans and nuclear medicine treatments with no wait list. INITIO has diagnostic scanning for cancer, cognitive impairment, and cardiac sarcoidosis, and now, offers prostate cancer therapy. With this latest addition, INITIO Medical Group reaffirms its commitment to providing the most advanced and effective treatments to its patients. We are proud to be able to offer Lu-177 PSMA therapy and look forward to the positive impact it will have on the lives of those affected by prostate cancer.
Referrals are accepted for FDG, DOTATATE, CT, and PSMA scans. All referrals are booked promptly with quick turn around on results as timing of PET/CT diagnostic screening matters to help prevent or catch disease before it’s too late. Your doctor needs to fill out the referral Requisition Form for an appointment.
Please ask your doctor to complete our requisition form, to get you started at INITIO.

Our Leadership

Dr Robert Tarzwell, MD, FRCPC CMO & Medical Director

Dr. Robert Tarzwell is a dual-certified specialist in psychiatry and nuclear medicine. His main area of clinical and research interest is functional brain imaging in psychiatric disorders, particularly the use of brain perfusion SPECT and FDG PET in traumatic brain injury with unresolved psychiatric symptoms. He is a Clinical Assistant Professor on the Faculty of Medicine at the University of British Columbia in the Department of Radiology, with a cross-appointment in the Department of Psychiatry.

He is co-author of the Canadian Association of Nuclear Medicine Guidelines on the use of brain perfusion SPECT, published in July 2021 and accepted into the CMA INFOBASE in February 2022.

Dr. Tarzwell holds an MD (Manitoba, 2001), and FRCPC certification in both Psychiatry (Dalhousie, 2006) and Nuclear Medicine (UBC, 2012).

Dr. William W.Y. Siu, M.D. B.Sc. FRCPC

Dr. William Siu is a Radiologist, actively practicing in British Columbian. He is a member in good standing and fully licensed by the College of Physicians and Surgeons of B.C. and is a Fellow of The Royal College of Physicians of Canada. Dr. Siu received his Medical Degree from the University of British Columbia. He completed an internship year at Royal Columbian Hospital, then performed his Radiology Residency at UBC. After his residency training, he obtained fellowship training in Neuroradiology at Vancouver General Hospital
In his current practice, William is active in a variety of imaging modalities, including CT, MRI, ultrasound, mammography, fluoroscopy and radiography. In addition, he provides subspecialty services in Neuroradiology and Interventional Radiology. He is a Clinical Associate Professor with UBC and is active in teaching and research activities with UBC, Simon Fraser University and University of Victoria. He had previously served in the role of President of the B.C. Radiological Society.

Dr. Philip Cohen


Dr Philip Cohen is Division Head, Nuclear Medicine, Lions Gate Hospital in North Vancouver, and Section Head, Nuclear Medicine, Doctors of BC. He is a pioneer in Nuclear Medicine in Canada and in the usage of 3-D imaging techniques to improve diagnosis of bone disease and injury in collaboration with the Medical Imaging Research Group at University of British Columbia.

Dr Cohen has been involved in clinical research trials of new radiopharmaceuticals. To that effect, Cohen was the first recipient of a research grant from the Lions Gate Hospital Foundation, one of several peer-reviewed awards that would follow.

Kalevi Kairemo MD, PhD, MSc (Eng)

Chief Physician/Professor, Molecular Radiotherapy & Nuclear Medicine, Docrates Cancer Center, Helsinki, Finland (retired)
Visiting Professor, Department of Nuclear Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
President Elect 2024-2025, World Association of Radiopharmaceutical and Molecular Therapy (WARMTH)

Prof Kairemo graduated with a MSc (Eng) degree from Helsinki University of Technology (Chemical Engineering)  in 1980 before undertaking medical training (MD (86), PhD (93)) at the University of Helsinki, Finland.

 He undertook specialist training in Clinical Chemistry (94), Nuclear Medicine (96), Health Care Administration (02) and Pharmaceutical Medicine (06) at Helsinki University Central Hospital. He had a post-doctoral research fellowship at Memorial Sloan-Kettering Cancer Center in 1989-93 in New York. Besides homeland Finland he is licensed medical specialist in Norway (1998), Sweden (2001) and Estonia (2010).

Prof Kairemo has held posts as Professor in Clinical Chemistry at the Norwegian University of Science and Technology (1998-9), Professor in Nuclear Medicine at Uppsala University Hospital in Sweden (2001-5) and as Head of the Nuclear Medicine Division, Department of Oncology at Helsinki University Central Hospital (2004-9). In 2009-2018, he has been the Chief of Nuclear Medicine and Molecular Radiotherapy (Theragnostics) at the Docrates Cancer Center, in Helsinki. Since 2015 he has acted as Visiting Professor in the Nuclear Medicine Department of The University of Texas MD Anderson Cancer Center, in Houston, TX; last visits in 2019 and 2022.

Prof Kairemo has also held posts in industry, as Medical Director of CTT Cancer Targeting Technologies Oy (2001-6), Medical Director of Imanext Oy (2006-8) and Clinical Director at Advanced Accelerator Applications SA (St Genis Pouilly, France) in 2009 (now Novartis Co.).

Prof Kairemo has wide experience in the development of tumour-seeking compounds, including monoclonal antibodies, specific phage-display peptides and cytotoxic drugs, and he has coordinated several EU Research Programme proposals, including as the National Coordinator and Management Committee Member for the European Union COST Action Project (BM 0607, Targeted Radionuclide Therapy) in 2007-11. He also served as Governing Body Member of the World Association of Radiopharmaceutical and Molecular Therapy (WARMTH) in 2009-12 and again 2018-21, and now as President-Elect 2022-23 before Presidency in 2024-25. He has also been active in hosting short-term scientific visits for students from developing countries.

Besides a few patents prof Kairemo has published more than 250 original publications in peer-reviewed journals (h-index 34). He received the Lifetime Achievement Award from the World Association of Radiopharmaceutical and Molecular Therapy in 2012 and was President of the 7th International Conference on Radiopharmaceutical Therapy held in November 2012 in Levi in Finnish Lapland. In 2014, Dr Kairemo hosted ISORBE Symposium and Workshop “Cell Labelling and Cell Therapies” in Helsinki. He organized also the 14th International Symposium on Radiopharmaceutical Therapy (WARMTH) in November 2018 in Helsinki.

The Clinic Team

Dr Rajpaul Attariwala, M.D., PhD, FANM, FRCPC

Nuclear Medicine Radiologist & Bio Engineer

A board-certified radiologist and molecular medicine physician certified in both Canada and the US. Dr Attariwala received his formal training at UBC, along with specialized medical training at Memorial Sloan Kettering Cancer Centre (New York), UCLA, and USC. He also holds a doctorate in biomedical engineering from Northwestern University (Evanston, IL).
Dr. Attariwala brings expertise in INITIO’s diagnostic protocols and is committed to ensuring that molecular medicine is practiced to the highest standards of scientific and technical proficiency, efficacy, and safety.

Wilson Lo, RTNM, CTIC, BSc

Nuclear Medicine and CT Technologist

With a Bachelor of (Life and Mathematical) Sciences from UBC and Nuclear Medicine and Computed Tomography Technology Diploma from BCIT, Wilson has worked at INITIO since 2015; his duties include receiving and preparing patients for their procedure(s), calibrating and administering radiopharmaceuticals, as well as performing and processing PET/CT and CT scans.
Wilson appreciates the opportunity for learning that his position affords, is excited to see the development of medical technology and values helping people by discovering information that is critical to their health. To every aspect of his work, Wilson brings to bear his belief that the best outcomes for people are achieved by offering the best care that is at the forefront of medical science.

Jason Leong, RTNM, BSc

Nuclear Medicine Technologist

After completing his Bachelor of Life Sciences at SFU, Jason furthered his goal of providing critical patient care to the community by obtaining a Nuclear Medicine Diploma from BCIT. While a typical Technologist usually focuses on patient care inside the clinic, Jason has also stepped up to focus on his goal through external means as well. From assisting with PET/CT scanner set up to coordinating PACS database onboarding to coordination and carrying out of many clinical trials Jason focuses on professional levels in all areas of his work as both a technologist and in streamlining and enhancing practice workflow information. Jason has found many opportunities to involve himself and work among many healthcare professionals both inside and outside the immediate field to provide the best care possible to the community and its patients. His care and attention to detail through a patient-centred focus is appreciated by all.

We are in Burnaby, BC

Our clinic is welcoming and designed for patient comfort. INITIO was designed for patient comfort and prioritizes patient needs and care. Every INITIO patient will have a private room for the injection and uptake process, in preparation for the scan.

#300 – 3185 Willingdon Green
Burnaby, BC V5G 4P3

Hours of operation: Monday to Friday 9AM-5PM

We are in Burnaby, BC

Our clinic is welcoming and designed for patient comfort. Focused on individualized patient needs and care, we offer a private, comfortable room in which patients can receive their radioisotope injection & relax while preparing for scan.

#300 – 3185 Willingdon Green
Burnaby, BC V5G 4P3

Hours of operation: Mon-Fri 9AM-10PM | Sun – Sat 9AM-7PM