Contrast‑Enhanced Mammography: A Game Changer for Dense Breasts

For many women with dense breast tissue, a standard mammogram doesn’t always provide the full picture. Dense tissue can mask cancers, making them harder to detect. Now, a new imaging technology called Contrast‑Enhanced Mammography (CEM) is helping uncover what mammograms alone can sometimes miss.

As someone who personally had dense breasts, I know how important it is to understand what that means for your screening and why supplemental imaging can be life-saving. This technology—and the awareness around it—has the power to make a real difference.

What Is Contrast‑Enhanced Mammography (CEM)?

CEM combines a traditional mammogram with a small amount of contrast dye. This contrast highlights areas with increased blood flow a sign that something abnormal may be present.

The process feels similar to a regular mammogram. After the technician injects the contrast, they take a series of mammogram images. These images can reveal findings that may not appear on a standard mammogram, especially in dense breasts.

Why Is It Important for Dense Breast Tissue?

If you have dense breasts, you are not alone. Nearly half of all women do. Glandular and connective tissue make up dense tissue, and they appear white on a mammogram—similar to some breast cancers. This “masking effect” makes it harder to detect cancers.

CEM helps overcome this challenge. Highlighting areas of contrast uptake adds another layer of detail to your imaging.

Recent studies show how powerful this can be. A large 2025 clinical trial revealed that CEM detected nearly four times more cancers than ultrasound in women with dense breasts (15.7 cancers per 1,000 exams vs. 4.2).

This is why I am so passionate about helping women understand dense breasts—it matters so much to know your options.

How Does CEM Compare to MRI and Ultrasound?

• MRI: Experts consider MRI the gold standard for high-risk screening. CEM offers similar cancer detection rates with fewer false positives.
• Ultrasound: Ultrasound can be a helpful additional screening tool, but it may still miss cancers in dense tissue.
• CEM: Combines the accessibility and comfort of a mammogram with the advanced detection benefits of an MRI.

When Might CEM Be Recommended?

CEM isn’t for everyone, but it can be especially valuable if you:

• Have dense breast tissue, and a recent mammogram was inconclusive
• Are considered high-risk for breast cancer
• Need detailed planning before surgery
• Cannot have an MRI due to cost, time, or other medical reasons.
• Your radiologist can help determine if CEM is a good option for you.

Questions to Ask Your Doctor

If you’re interested in learning more about CEM, consider asking:

Q. Is contrast‑enhanced mammography offered at your imaging center?

Q. How does my breast density affect my screening?

Q. Will my insurance cover CEM or are there out-of-pocket costs?

Q. Should I consider CEM instead of, or in addition to, MRI?