Toronto General Hospital

Computed Tomography (CT)

Hours of Operation:
Monday to Friday
8:00 a.m. – 11:00 p.m.

• CT uses a pencil-thin X-ray beam to take detailed pictures inside the body.
• CT can be used to study all parts of the body.
• From CT images, colourful three-dimensional pictures of organs can be created.

General Radiography (X-ray)

Hours of Operation:
Monday to Friday
8:00 a.m. – 5:00 p.m.

• X-rays are the oldest and most frequently used form of medical imaging.
• X-rays use small amounts of radiation to produce images of bones and internal organs.
• It’s non-invasive and helps physicians diagnose and treat medical conditions.

Interventional Radiology

Hours of Operation:
Monday to Friday
8:00 a.m. – 4:00 p.m.

• Interventional radiology offers some of the most minimally invasive, targeted treatments available.
• It uses X-rays, Ultrasound, CT and other imaging to advance a catheter in the body.
• IR treatments allow for lower risk, less pain, and shorter recovery time.

Magnetic Resonance Imaging (MRI)

Hours of Operation:
24 hours, 7 days a week

• MRIs produce pictures of the body using powerful magnets and radio waves.
• MRI is a non-invasive procedure.
• Blood flow and organ motion can be measured with MRI.
• Unlike CT or PET scans, MRI does not use radiation to take an image.

Positron Emission Tomography MRI (PETMR)

Hours of Operation:
Monday to Friday
9:00 a.m. – 5:00 p.m.

• PETMR combines technology from both molecular imaging and MRI.
• Images produced from injection of radiopharmaceutical are combined with MRI images.
• This new technology currently is used in research trials.
• PET scans your body using a small amount of radioactive suger to help find certain diseases early.
• PET scans can also help show how well your treatment is working.

Molecular Imaging (Nuclear Medicine)

Hours of Operation:
Monday to Friday
8:00 a.m. – 5:00 p.m.

• Nuclear medicine uses small amounts of radioactive material, called radiopharmaceuticals, to aid diagnosis.
• The radiopharmaceutical emits energy from the body, which is picked up by a Gamma Camera.
• It’s safe and typically non-invasive.

Radiopharmacy

Hours of Operation:
Monday to Friday
5:30 a.m. – 4:00 p.m.

• The radiopharmaceuticals used in nuclear medicine are manufactured every day in our centralized radiopharmacy.
• Radiopharmacy or nuclear pharmacy is a specialized type of pharmacy dedicated only to compounding and dispensing radiopharmaceuticals for nuclear medicine procedures.

Ultrasound

Hours of Operation:
Monday to Friday
8:00 a.m. – 9:00 p.m.

• Ultrasound uses sound waves to see the inside of the body in real-time.
• It allows examination of organs, soft tissues and blood vessels.
• Common uses include examination of the uterus, liver, thyroid, heart—the list goes on!