Best Heart Scan for Women: CCTA or Calcium Score?

A calcium score can come back zero even when a woman already has plaque. The reason is timing. Women tend to build up calcium in their arteries later than men, so early plaque is often still soft, and a calcium score only sees calcium. A coronary CT angiogram (CCTA) sees both soft and hard plaque, so it can catch what a calcium score misses. A calcium score is still useful if you're deciding about a statin, or if contrast isn't an option for you.

Which heart scan is best for women?

Both are quick CT scans of your heart. The difference is what each one can see. A calcium score looks only for calcium, the mark plaque leaves once it hardens. A CCTA uses contrast dye to light up the inside of your arteries, so it shows soft plaque, hard plaque, and any narrowing.

Heart guidelines mostly use a calcium score to help decide whether to start a statin, and keep a CCTA for selected people, such as those with chest pain. The trade-off is real: a CCTA needs contrast dye through an IV, and it costs more. What you get in return is a view of soft plaque, which is where plaque starts. Our CT angiogram guide explains how the scan works.

Why can a calcium score miss plaque in women?

Plaque starts out soft and hardens with calcium over the years, and women's arteries tend to get there later. Women's calcium scores run lower than men's at every age, while men start building calcium earlier.

So when plaque first shows up in a woman, it's often still soft. In a study of 805 healthy adults from families with early heart disease, more than 80% of the plaque in women under 55 was soft. A zero calcium score is genuinely good news about hard plaque. It just can't speak to soft plaque that hasn't calcified yet.

Why does soft plaque matter?

Soft plaque is newer, and it's often the riskier kind, as it is prone to rupture. It also doesn't have to block an artery to matter. About two-thirds of heart attacks start in plaque that hadn't narrowed the artery much, which is why a test that only looks for blockages can miss it.

The hopeful part is that soft plaque can change. With treatment that lowers LDL cholesterol, plaque can shrink and harden, while calcified plaque tends to stay put. Finding soft plaque early gives you and your doctor more to work with.

Which heart risks are specific to women?

A few things raise heart risk only in women, and they're easy to forget because they can happen long before any sign of heart trouble:

• Pregnancy complications. Preeclampsia, high blood pressure during pregnancy, gestational diabetes, and preterm delivery all raise heart risk later in life.
• Menopause before 40. Heart guidelines count early menopause among the things that raise risk.
• The menopause years. LDL cholesterol tends to climb during the menopause transition, and heart risk rises faster with it.
• The risks everyone shares. A family history of early heart disease, a high lipoprotein(a), high blood pressure, diabetes, and smoking.

If any of these sound familiar, they're worth raising with your doctor, and a CCTA can show whether plaque has started. Our guide to who should get a heart scan walks through who's a good candidate.

Do heart symptoms look different in women?

Sometimes. Chest pain or pressure is still the most common heart attack symptom for women and men alike, but women are more likely to also feel short of breath, sick to their stomach, or pain in the back or jaw. Anything sudden or severe is a reason to call 911.

If your chest pain comes and goes and your tests keep coming back normal, you're not alone. In one large study, 65% of women with chest pain had no blocked artery, compared with 32% of men, and those women still had higher heart risk. Treadmill stress tests also miss more disease in women. For ongoing chest pain, heart guidelines list a CCTA as a first-line test.

What can AI plaque analysis add?

A standard CCTA report tells you whether plaque is there and how much it narrows each artery. AI plaque analysis, such as Cleerly or HeartFlow Plaque, adds the numbers behind that picture: how much of your plaque is soft and how much is hard, where it sits, and an overall plaque stage. At Veevo it's an optional add-on to the scan.

The bottom line

Because women tend to calcify later, a calcium score can look reassuring while soft plaque is already there. A CCTA shows that plaque, along with any hard plaque and narrowing. Before a CCTA, tell the imaging center about allergies or kidney problems, and if contrast isn't right for you, a calcium score is still a useful check on hard plaque. Veevo offers both scans in California and New York, with the referral handled for you; see current prices.