Patient Info

Canada’s Radiologists: Physician Specialists in Diagnostic Imaging

Diagnosing an illness or disease and determining if treatment is working often requires physicians and other healthcare providers to see inside the body and look in ways the human eye cannot. A number of different imaging exams can be used to provide this view, including X-ray, MRI, ultrasound, CT scan, and PET scan. Radiologists are the physicians who specialize in interpreting the results of these imaging exams. Family physicians and other specialists turn to radiologists for consultation on the safest and most effective exam, and what the results mean for the patient and the treatment options.

In many cases, you will not meet the radiologist who is working on your behalf. You can trust, however, that they have the knowledge and experience to help you and your doctor make informed decisions about your health care.

Information You Can Use

The CAR believes that patients and their families are at the centre of the healthcare team. That’s why this section of our website contains practical information you can use to make safe and effective choices.

An important diCAR Breast Advicescussion on breast cancer screening

If you are age 40 and over, a well-informed and timely decision regarding your breast health becomes a priority. See Our Breast Advice on Breast Cancer Screening.

The CAR is an active participant of Choosing Wisely Canada (CWC), a physician-led national public education campaign that encourages physicians and patients to engage in conversations about the best choices in tests, treatments and procedures, with a view to helping them make informed and effective decisions that ensure high-quality care.

Click on the following links for resources related to medical imaging procedures made available through CWC:

The CAR is a proud member of the international Alliance for Radiation Safety in Pediatric Imaging. For information to help you make informed choices about diagnostic imaging for your child, please visit the Resources for Parents page of the Image Gently website.

The CAR is a partner in the Medical Imaging Team, whose publications help the public identify the role of each of the healthcare professionals (physicians, physicists, sonographers and technologists) who collaborate to improve the health of Canadians through diagnostic imaging.

Among the important patient resources developed by the Medical Imaging Team is a brochure which provides patients with basic information regarding medical imaging to help them make informed decisions about their health. Additional information is also available at the Information for Patients and Their Families page of the Medical Imaging Team website., the Radiological Society of North America’s patient resources website, provides information on various radiology tests and treatments as well as information about how patients can prepare, what they may experience and more.

We consider the information provides useful for general purposes. However, we must caution that some American radiological procedures and practices are not the same as in Canada and encourage those who have questions or concerns related to medical imaging procedures in Canada to speak with their physician. Please also note that the information is available only in English and Spanish.

Find an Accredited Clinic    

As part of our ongoing efforts to promote patient safety and ensure the best healthcare for patients, the CAR accredits radiology clinics whose equipment, processes and people meet the highest standards. Our accreditation program currently applies to mammography clinics and Bone Mineral Density clinics. The CAR will soon develop accreditation programs for other types of diagnostic imaging.

Find an accredited mammography clinic in your area.

Find an accredited Bone Mineral Density (BMD) clinic in your area.

Please Note

The CAR does not provide medical advice, and does not and cannot respond to requests for direct feedback, specific patient information or physician referrals.           



“While great progress has been made in early detection and treatment, breast cancer remains the most common cancer in Canadian women over the age of 20 and one in seven women with breast cancer will receive their diagnosis in their 40s,” said Sandra Palmaro, CEO, and Canadian Breast Cancer Foundation – Ontario Region. “The Foundation supports the Canadian Association of Radiologists guidelines addressing screening mammography, and encourages all women aged 40-49 to talk to a health care provider about the benefits and limitations of mammography and what is right for them. Evidence shows that screening women in this age group helps save lives.”