During a mammogram, each breast is gently compressed between two plates for a few seconds while the X-ray is taken. Compression keeps the tissue still and improves image quality. Two or more images of each breast are usually taken.
Why it matters
- Mammograms detect cancer years before symptoms appear
- Finding cancer early means lighter treatments and better outcomes
- 3D mammography (tomosynthesis) offers an even sharper view
Compression is uncomfortable but brief. Many women find it mildly painful for a few seconds. Radiologists also look for microcalcifications — tiny calcium deposits that can be an early clue, not a diagnosis.