MRI, CT and ultrasound imaging all have some similarities in terms of what they do, but they completely differ in their uses. Here are the benefits of MRI scans, CT scans and ultrasound imaging, and when and how they're used.
MRI Scans
Magnetic resonance imaging (MRI) can be used to produce high quality images of soft tissues, bones and organs. MRI scans are done on numerous parts of the body, including the head and brain, neck, abdomen, groin, shoulder, knee, ankle, and foot.
“The benefit of MRI is that we can view the soft tissues and so in sports-related injuries in particular we can look at the ligaments and tendons and muscles,” says Dr. Audrey Spielmann, a physician and HealthChoicesFirst.com partner. “When we look at the brain we can see the brain tissue in great detail.”
CT Scans
A CT scan (or CAT scan) is a type of diagnostic imaging test that produces images of the body using X-rays and a computer.
“The best use for CT is to look for fractures and bony abnormalities, and/or irregularity of the cartilage or bone underneath the cartilage,” says Spielmann.
Ultrasound Imaging
Ultrasound imaging uses high-frequency sound waves to produce dynamic images called sonograms of tissues, organs, or blood flow in the body.
“Ultrasound is a great screening test or first line examination,” says Spielmann. “We don't see bone very well with ultrasound, but we can look at the soft tissues.”
Depending on your health condition or injury, your physician may advise an MRI scan, a CT scan or ultrasound imaging.
“If you have any more questions about how MRI or other imaging modalities might help with your sports injury, you can talk to your family doctor or any imaging centre,” says Spielmann.
Complementary Content to MRI Scans vs. CT Scans vs. Ultrasound Imaging
Videos & Articles:
Ultrasound is also used in physiotherapy as a treatment tool. Find out more: Ultrasound in Physiotherapy.
Breast MRI can be a useful tool in detecting breast cancer. Watch the Breast Cancer video.
CT scans can be a useful tool in detecting a number of sports injuries, including Dancer's Fractures.