Breast Cancer Doesn't Wait. Neither Should You. What is it? Mammography, also known as a mammogram test, is the best way to screen for early-stage breast cancer. Mammography uses X-rays to scan a patient’s breasts. The images produced are then examined for any irregularities or changes from previous tests. At both our St. Margaret’s hospital locations, digital mammography is used, which allows our radiologists to capture and manipulate images so any abnormalities can be seen more easily. Furthermore, both our locations utilize 3-D tomosynthesis mammography. Further below, you can learn more about 3-D mammograms and how it’s beneficial to our patients. What to expect: During a mammogram, a technologist will have the patient stand in front of a special type of X-ray machine. The technician will then position each of the patient’s breasts on the surface of a flat plate. A second plate will then be used to firmly press down on the breast from above, which will flatten and compress it so it remain still during testing. After the plates are in place, the technologist will take images using the X-ray equipment. During the test, the patient may feel some pressure and discomfort. The same process will then be repeated to obtain a side view of the breast tissue. Both breasts are X-rayed in this manner.