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• Magnetic Resonance Imaging (MRI)
An MRI scan is an imaging technique that uses magnetism, radio waves and a computer to produce images of body structures.
The patient lies inside a large, cylinder-shaped magnet. Strong radio waves are then sent through the body. This affects the body's atoms, forcing the protons into a different position. As they move back into place they send out radio waves of their own. The scanner picks up these signals and a computer converts them into a picture based on the location and strength of the signals.
• Radiography (X-ray)
An X-ray (radiograph) picture is an image of the shadows cast by the denser materials (such as bones) in your body.
An x-ray is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging.
• Computed Tomography (CT or CAT scan)
A computed axial tomography scan is an x-ray procedure that combines many x-ray images with the aid of a computer to generate cross-sectional views and, if needed, three-dimensional images of the internal organs and structures of the body.
• Nuclear Medicine (NM)
Nuclear medicine uses small amounts of radioactive substances that are attracted to specific organs, bones, or tissues. These substances emit gamma rays that can be detected by a gamma camera. These cameras work in conjunction with computers used to form images that provide information about the area of body being imaged. The amount of radiation from a nuclear medicine procedure is comparable to that received during a diagnostic x-ray.
• Ontario Breast Screening Program (OBSP)
First established in 1990, the Ontario Breast Screening Program provides high quality breast cancer screening services to women living in Ontario, using mammography. The OBSP currently accepts women aged 50 and over who may refer themselves to the OBSP. To learn more...
• Mammography
A mammogram is an X-ray test that produces an image of the inner breast tissue. This technique is used to visualize structures within the breasts. Mammography, therefore, can help in identifying cysts, calcifications, and tumors within the breast.
• Bone Mineral Densitometry (Bone scan or BMD)
Bone density scanning, also called bone densitometry, is an enhanced form of x-ray technology that is used to measure bone mineral density (BMD).
It measures bone density in the hip, spine, wrist, forearm, foot, heel or fingers.
• Sonography (Ultrasound)
An ultrasound is a procedure that uses high-frequency sound waves to view internal organs and produce images of the human body. The human ear cannot hear the sound waves used in an ultrasound.
This procedure uses the principles of sonar developed for ships at sea. As sound passes through the body it produces echoes, which can identify distance, size and shape of structures inside.