FOR PATIENTS AND VISITORS: You must self-screen and wear a mask if entering the Emergency Department, waiting areas, patient rooms or other patient care areas. All Unity Health Toronto spaces are mask-friendly. Learn more about our current guidelines for visitors.

Medical & Diagnostic Imaging

Unity Health provides patients with medical and diagnostic imaging services such as CT scans, MRI exams, X-rays, nuclear medicine scans and ultrasounds using the latest methods and technology available. We perform thousands of exams at St. Joseph’s Health Centre, St. Michael’s Hospital and Providence Healthcare each year.

Our Medical and Diagnostic Imaging departments are made up of multidisciplinary teams including radiologists, technologists, sonographers, nurses, aides, clerical staff, and RIS/PACS team. Each team member plays a distinct role in facilitating patients through their procedures and providing reports for physicians so patients receive appropriate treatment. Our programs are accredited through the Michener Institute for Applied Health Sciences and the University of Toronto and we support student clinical placements from a variety of academic institutions.

The scans and tests we offer include:

  • CT scan. A computerized tomography scan (CT or CAT scan) uses computers and rotating X-ray machines to create cross-sectional images of the body while the patient moves through the gantry (circular donut-shaped part of the scanner) on a movable table the detectors collect data to create an image. These images provide more detailed information than normal X-ray images. A CT scan can be used to visualize nearly all parts of the body and is used to diagnose disease or injury as well as to plan medical, surgical or radiation treatment.
  • MRI. Magnetic Resonance Imaging (MRI) is a diagnostic procedure that allows physicians to see detailed images of the internal structures of the patient’s body using a large magnet, radio waves and a computer.
  • Nuclear Medicine. Nuclear medicine is a medical imaging specialty that uses radioactive materials known as radioactive tracers to diagnose and treat disease.  Nuclear medicine exams are a safe, non-invasive way to assess organ and tissue function.
  • Angiography/Interventional Radiology. Angiography is the study of blood vessels and organs by injecting contrast media (X-ray dye) into arteries or veins and taking pictures as the contrast media flows through these blood vessels. Interventional radiology uses x-ray and ultrasound imaging to perform minimally invasive surgical procedures that diagnose and treat medical conditions.
  • Ultrasound. Ultrasound technology is a safe and painless way to see the different tissues of the body. Please view patient prep instructions for ultrasound here.
  • X-Ray. X-rays are a form of ionizing electromagnetic radiation. Electromagnetic radiation exists on a scale with lower-powered energy like microwaves, radio waves and visible light at the bottom, and higher-powered energy like X-rays, gamma rays and particulate radiation at the top.
  • Breast Imaging. Breast Imaging is used to help identify and diagnose any abnormalities that can be found in the breast. We provide a wide range of screening and diagnostic examinations of the breast using imaging. This includes: digital radiography, ultrasound and interventional procedures including MRIs.
  • Bone Mineral Density (BMD). BMDs are a low-dose x-ray exam that measures the mineral content and density of the bones.  This test helps determine if a person has osteoporosis, if they may be at risk of breaking bones (fracture risk), and if medications or supplements are needed to help prevent bone loss.

Medical & Diagnostic Imaging at St. Joseph's Health Centre

St. Joseph’s Diagnostic Imaging Department performs around 186,000 exams per year and has one of the shortest wait times in the GTA from physician referral to exam completion, which allows for quick diagnoses and timely treatment for patients.

Ground Floor Barnicke Wing
416-530-6169
Fax: 416-530-6060

Booking Office Hours: Monday to Friday, 8 am to 4 pm
Holidays, closed.

Breast Centre: 3rd floor, East Wing
416-530-6701

Mammography and breast ultrasound fax: 416-530-2084

BMD fax: 416-530-6977

Outpatient Hours of Operation by Modality (excluding statutory holiday unless otherwise indicated):

  • MRI – 24/7, except Christmas and Boxing Day
  • CT – Weekdays, 8 am to 4 pm
  • Interventional – Weekdays, 8 am to 4 pm
  • Ultrasound – Weekdays, 6 am to 7 pm
  • Nuclear Medicine – Weekdays, 7:30 am to 3:30 pm
  • X-ray – Weekdays, 8 am to 4 pm
  • Fluoroscopy – Weekdays, 9:30 am to 12 pm
  • BMD – Monday, Wednesday, Friday, 8:30 to 11:30 am, Tuesday and Thursday, 12:30 to 3:30 pm
  • Mammography – Tuesday, Wednesday and Thursday, 8 am to 7:30 pm, Friday, 8 am to 3 pm
  • Breast Centre – Monday, Tuesday, Wednesday, Friday and Saturday, 8 am to 3:30 pm, Thursday, 8 am to 6:30 pm

Clinics & Services

St. Joseph’s is a designated site for the Ontario Breast Screening Program. Women between the ages of 50 and 74 can call us to book mammograms without a referral, meaning patients are guaranteed a mammogram appointment within seven business days.

Women between the ages of 50 and 74 are at the highest risk of being diagnosed with breast cancer. Our Ontario Breast Screening Program designation is helping women in this age group get screened faster and detect breast cancer earlier. Women outside of this age group can also have a mammogram, however they would require a physician referral.

If a patient’s mammogram reveals an abnormality, treatment is offered at St. Joseph’s or St. Michael’s, which ensures a smooth continuum of care.

Read more

Medical & Diagnostic Imaging at St. Michael's Hospital

Please note: We will do our best to honour scheduled appointments. However, if there is a patient that requires urgent care, this means we may need to reschedule appointments last-minute to accommodate. If there is a change to your appointment we will contact you immediately, otherwise, please consider your MRI or CT appointment confirmed and plan to arrive for your appointment as scheduled.

St. Michael’s Hospital Medical Imaging
3rd Floor Cardinal Carter South, 30 Bond St.
416-864-5656
Fax: 416-864-3051
Patient Booking Hours: Monday to Friday, 8 a.m. to 4:30 p.m.

St. Michael’s Hospital MRI Department
B2 Cardinal Carter South, 30 Bond St.
416-864-5661
Fax: 416-864-5820
Patient Booking Hours: Monday to Friday, 8 a.m. to 4 p.m.

Sumac Creek Health Centre
3rd Floor 73 Regent Park Blvd.
416-864-3022
Fax: 416-864-6051
Imaging Department Hours: Monday to Friday, 8:30 a.m. to 4:30 p.m.

St. Michael’s Health Centre, Bone Mineral Density
7th Floor 61 Queen St. E.
416-867-3679
Fax: 416-867-3654
Patient Booking Hours: Monday to Friday, 8 a.m. to 4:30 p.m.

Outpatient Hours of Operation by Modality (excluding statutory holiday, unless otherwise indicated):

  • BMD (30 Bond St.) – Weekdays, 8 a.m. to 4 p.m.
  • BMD (61 Queen St. E.) – Weekdays, 8 a.m. to 4 p.m.
  • CT – Weekdays, 7:30 a.m. to 10 p.m.
  • Interventional – Weekdays, 7:30 a.m. to 4 p.m.
  • Mammography – 8 a.m. to 5 p.m. (visit the CIBC Breast Centre drop-down on the Oncology and Endoscopy page for more information)
  • MRI – Weekdays, 8 a.m. to 3:45 p.m., closed noon to 1 p.m.
  • Nuclear Medicine – Weekdays, 8 a.m. to 4 p.m.
  • Ultrasound – Weekdays, 7:30 a.m. to 6 p.m., weekends, 9 a.m. to 3:30 p.m.
  • X-ray – Weekdays, 8 a.m. to 4:45 p.m.

Medical Imaging records are available to patients and their care providers through a secure, online application called PocketHealth.

Clinics & Services

Magnetic Resonance Imaging (MRI) is a diagnostic procedure that allows physicians to see detailed images of the internal structures of the patient’s body using a large magnet, radio waves and a computer.

Read more

Unity Health provides patients with medical and diagnostic imaging services such as CT scans, MRI exams, X-rays, nuclear medicine scans and ultrasounds using the latest methods and technology available.

Read more

Ultrasound technology is a safe and painless way to see the different tissues of the body.

Read more

Medical & Diagnostic Imaging at Providence Healthcare

Medical imaging services provided at Providence Healthcare include X-Ray and Ultrasound.

3276 St Clair Ave E.
416-285-3666 ext. 4068
Fax: 416-285-3611

Monday 8 a.m. to 4 p.m.
Tuesday to Friday, 8:30 a.m. to 4:30 p.m.

Please contact Providence Healthcare Health Information Management for Medical Imaging Records.

Providence Healthcare Health Information Management
3276 St. Clair Ave. E.
416-285-3666 ext. 4336
Fax: 416-285-3635
Email: healthrecordsPHC@unityhealth.to
Monday to Friday, 8:30 a.m. to 4:30 p.m.

Clinics & Services

Medical imaging services provided at Providence Healthcare include X-Ray and Ultrasound.

Read more

As of April 1, 2021, St. Michael’s Foundation amalgamated with Providence Healthcare Foundation and all receipts will be issued by St. Michael’s Foundation.

We are pleased to let you know that your donation will go directly to the organization and priority that you have designated.

Last updated December 14, 2023