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Progression of coronary artery calcification: a pilot study
J E Maher1, L F Bielak, J A Raz
1Department of Epidemiology, University of Michigan, Ann Arbor, USA.
Mayo Clinic Proceedings
|April 30, 1999
Summary
Coronary artery calcification (CAC) scores increased by approximately 24% annually in participants over 3.5 years. Electron beam CT effectively tracks CAC progression, aiding in evaluating interventions for coronary atherosclerosis.
Area of Science:
- Cardiovascular imaging and diagnostics
- Atherosclerosis research
- Medical technology assessment
Background:
- Coronary artery calcification (CAC) is a marker of coronary atherosclerosis.
- Quantifying changes in CAC is crucial for understanding disease progression.
- Electron beam computed tomography (CT) offers a method for CAC assessment.
Purpose of the Study:
- To quantify individual changes in CAC over 3.5 years.
- To determine the annual rate of CAC change using electron beam CT.
- To assess the feasibility of using electron beam CT for studying CAC progression.
Main Methods:
- Eighty-two participants from a community-based study underwent follow-up electron beam CT.
- CAC scores were measured at baseline and after 3.5 years.
- Coronary artery disease risk factors were analyzed at baseline.
Main Results:
- A significant average annual increase of 24% in CAC score was observed (P<0.05).
- CAC score increase was less pronounced in older participants.
- No significant difference in CAC score change was found between sexes.
Conclusions:
- Electron beam CT is effective in detecting significant CAC changes over time.
- This method shows promise for studying CAC progression in clinical trials.
- It may be valuable for evaluating interventions aimed at slowing coronary atherosclerosis.