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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

Risk stratification of non-contrast CT beyond the coronary calcium scan

Paul Madaj1, Matthew J Budoff

  • 1Department of Medicine, Division of Cardiology, Los Angeles Biomedical Research Institution at Harbor-UCLA, 1124 W Carson St, Torrance, CA 90505, USA.

Journal of Cardiovascular Computed Tomography
|September 18, 2012
PubMed

Insights

Coronary artery calcification (CAC) scoring on non-contrast cardiac CT offers more than just disease detection. It provides valuable insights into atherosclerosis, cardiac fat, and extracoronary calcification for improved risk assessment.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Preventive Cardiology

Background:

  • Coronary artery calcification (CAC) is a key indicator of coronary artery disease (CAD) and cardiovascular risk.
  • CAC provides prognostic information that complements traditional risk scores like Framingham.
  • Non-contrast cardiac CT offers insights beyond the Agatston score.

Purpose of the Study:

  • To review the comprehensive interpretation of non-contrast cardiac CT.
  • To highlight the added value of CAC assessment beyond coronary artery calcification scoring.
  • To emphasize the prognostic implications of extracoronary findings.

Main Methods:

  • Review of current literature and clinical practice guidelines for non-contrast cardiac CT interpretation.
  • Analysis of the prognostic significance of various CT-derived measures.
  • Discussion of the utility of CAC in assessing atherosclerosis, cardiac fat, and extracoronary calcification.

Main Results:

  • Non-contrast cardiac CT can quantify intrathoracic fat (pericardial, epicardial) and hepatic fat, linked to atherosclerosis and type 2 diabetes.
  • Extracoronary calcifications (aortic valve, mitral annulus, thoracic aorta) provide additional cardiovascular risk stratification.
  • Assessment of myocardial scarring from infarcts on CAC scans offers incremental prognostic value.

Conclusions:

  • Comprehensive interpretation of non-contrast cardiac CT, extending beyond Agatston scoring, is crucial for maximizing clinical utility.
  • Integrating CAC findings with extracoronary calcifications and fat quantification enhances cardiovascular risk assessment in asymptomatic individuals.
  • Realizing the full potential of non-contrast cardiac CT ensures benefits outweigh risks for appropriately selected patients.

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