How a coronary calcium scan revealed hidden risk -and why access matters. Rob was 52. He exercised every day, ate well, and had only borderline cholesterol. His standard cardiovascular risk assessment placed him in a reassuring category. From his perspective, there was little reason to feel concerned. He preferred to wait before starting a cholesterol-lowering medication, such as a statin. Then a coronary artery calcium scan revealed something his risk assessment had not mad