Coronary Artery Calcium (CAC) scan
5/5 Strong
A quick, non-contrast CT that scores calcified plaque in the coronary arteries to refine heart-attack risk.
Why this evidence score
Strong prospective data for risk reclassification, especially in middle-aged men with intermediate risk.
Pros
- Strong risk-prediction evidence
- Fast, no contrast
Cons
- Small radiation dose
- Does not detect non-calcified plaque
- Price
- Often self-pay at imaging centers; check local
- Available in
- Global
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