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Coronary CT angiography in symptomatic patients
1Institute of Radiologic Diagnostic, University of Munich, Klinikum Grosshadern, Marchioninistrasse 15, 81377 Munich, Germany. christoph.becker@med.uni-muenchen.de
European Radiology
|April 1, 2005
Summary
Coronary CT angiography (CTA) shows high accuracy in ruling out coronary artery disease (CAD). CTA can detect vulnerable plaques and guide therapy for coronary atherosclerosis in specific patient groups.
Area of Science:
- Cardiovascular Imaging
- Radiology
- Medical Diagnostics
Background:
- Current best spatial and temporal resolution for ECG-gated coronary CT angiography (CTA) is 0.4 mm and 165 ms.
- Previous studies compared non-invasive CTA with conventional angiography for detecting coronary artery stenoses.
Purpose of the Study:
- To evaluate CTA's reliability in excluding coronary artery stenoses in low-likelihood CAD patients.
- To explore CTA's potential for detecting vulnerable plaques and intracoronary thrombus in acute coronary syndromes.
- To assess CTA's role in guiding therapy for coronary atherosclerosis in chronic stable angina.
Main Methods:
- Retrospective ECG-gated multi-detector-row CT angiography.
- Comparison with conventional angiography for stenosis detection.
- Analysis of plaque extent and morphology.
Main Results:
- CTA demonstrates a high negative predictive value for coronary artery stenoses.
- CTA shows promise for identifying vulnerable plaques and intracoronary thrombus.
- CTA can visualize coronary atherosclerosis extent and morphology.
Conclusions:
- CTA is a reliable tool for ruling out coronary artery stenoses in patients with low pre-test probability of CAD.
- CTA may serve as a rapid diagnostic tool for acute coronary syndromes and unstable angina.
- CTA can aid in therapeutic decisions for coronary atherosclerosis in chronic stable angina.