The Atherosclerotic Profile of a Young Symptomatic Population: Coronary CT Angiography or Calcium Score?

In younger patients, the choice between a calcium score and a full CT angiogram matters more than in older ones — because young plaque is often soft and uncalcified, invisible to a calcium scan.

In over 1,100 symptomatic patients aged 19 to 49, CT angiography detected far more atherosclerosis (45 percent) than calcium scoring (27 percent). Among those with a calcium score of zero, a quarter still had plaque on CT angiography and more than 1 in 10 had high-risk plaque features. Above age 35, angiography clearly outperformed calcium scoring; below 35, the two were closer, but a zero score still failed to rule out disease.

The clinical takeaway echoes a recurring theme: for young, symptomatic patients, a zero calcium score is not an all-clear, and direct vessel imaging finds disease the calcium scan misses.

We rate the evidence strong. A sizable, focused cohort, it makes a clear and clinically useful point about which test to choose in younger patients — tempered by its retrospective, single-center design.