coronary calcium score
Quantitative CT measurement of calcified plaque in coronary arteries used for risk stratification.
Full Definition
The coronary calcium score, also known as the Agatston score, is a quantitative measurement derived from non-contrast CT imaging that assesses the amount of calcified plaque in the coronary arteries. This score is calculated based on the density and area of calcified lesions and is reported in Agatston units. Scores are categorized as minimal (0), mild (1-10), moderate (11-100), moderately high (101-400), or extensive (>400). The calcium score provides valuable prognostic information for cardiovascular risk assessment and helps guide preventive therapy decisions, particularly in intermediate-risk patients.
Usage
Usage note: Use Arabic numerals for score values; capitalize Agatston when referencing the specific scoring method.
In Context
- "The patient's coronary calcium score of 350 places him in the moderately high risk category." — Cardiovascular risk assessment
- "A calcium score of zero in this 45-year-old patient suggests very low risk for coronary events." — Preventive cardiology consultation