coronary calcium density
A measurement that quantifies the intensity of calcium deposits in coronary arteries, typically expressed in Hounsfield units.
Full Definition
Coronary calcium density refers to the radiographic density of calcified plaques within coronary arteries, measured during cardiac CT scanning. Unlike the coronary artery calcium score which reflects total calcium burden, density specifically measures the compactness or intensity of calcium deposits expressed in Hounsfield units (HU). Higher density calcium (>400 HU) may indicate more stable, mature plaques, while lower density calcium might suggest more active calcification processes. This parameter provides additional prognostic information beyond total calcium scoring and helps refine cardiovascular risk stratification.
Usage
Usage note: Distinguish clearly from total calcium score; specify measurement units when reporting values.
In Context
- "The coronary calcium density averaged 180 Hounsfield units across all coronary vessels." — Cardiac CT interpretation report
- "Lower coronary calcium density values suggested more metabolically active calcification." — Research study documentation