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Updated: Jun 13, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
04:40

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Published on: August 28, 2018

Coronary artery calcium scoring for cardiovascular risk stratification: A prospective cohort study

Elangovan Raman1, Aishwarya Kankipati Sailaxmi2, Amoolya Rao Amaravadhi3

  • 1Department of Internal Medicine, Institute Of Internal Medicine, Madras Medical College, Chennai, Tamil Nadu, India.

Bioinformation
|June 12, 2026
PubMed

Insights

Coronary artery calcium (CAC) scoring significantly enhances cardiovascular risk prediction in asymptomatic individuals. Higher CAC scores strongly correlate with increased major adverse cardiovascular events, improving risk stratification beyond traditional models.

Area of Science:

  • Cardiology
  • Preventive Medicine
  • Medical Imaging

Background:

  • Traditional cardiovascular risk models often underestimate risk in asymptomatic individuals.
  • Subclinical atherosclerosis detection is crucial for early intervention.
  • There is a need for improved risk stratification tools.

Purpose of the Study:

  • To evaluate the prognostic value of coronary artery calcium (CAC) scoring.
  • To assess CAC scoring's ability to predict major adverse cardiovascular events (MACE) over five years.
  • To determine if CAC scoring improves risk stratification when added to traditional models.

Main Methods:

  • Retrospective analysis of asymptomatic individuals.
  • Coronary artery calcium (CAC) scoring was performed.
  • Major adverse cardiovascular events (MACE) including myocardial infarction, stroke, and cardiovascular mortality were tracked over five years.
  • Statistical analysis included hazard ratios and net reclassification improvement.

Main Results:

  • Higher CAC categories were associated with progressively increased risk of MACE.
  • CAC scores ≥400 demonstrated the highest event burden.
  • Each 100-unit increase in CAC score independently increased cardiovascular risk nearly twofold (HR 1.92, p=0.001).
  • CAC scoring significantly improved risk stratification, yielding a net reclassification improvement of 0.24.

Conclusions:

  • Coronary artery calcium (CAC) scoring is a valuable prognostic tool for asymptomatic individuals.
  • CAC scoring significantly improves cardiovascular risk stratification beyond traditional models.
  • CAC scoring aids in identifying individuals who may benefit from early preventive strategies.

Keywords:
Coronary artery calcium (CAC)atherosclerosiscardiovascular riskcomputed tomographycoronary artery disease (CAD)major adverse cardiovascular eventsrisk stratification

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