CCTA
Pronunciation: C-C-T-A
Also written as: CCTA — coronary computed tomography angiography
Coronary computed tomography angiography, a non-invasive imaging method to visualize coronary arteries using CT technology.
Full Definition
CCTA (coronary computed tomography angiography) is a non-invasive imaging technique that uses multidetector CT scanners and iodinated contrast to provide detailed visualization of coronary anatomy and atherosclerotic plaque. Modern CCTA can accurately detect coronary stenosis, assess plaque composition and burden, and evaluate coronary anomalies. The examination requires heart rate control, breath-holding, and careful timing of contrast injection. CCTA has high negative predictive value for excluding significant coronary artery disease and is increasingly used as a first-line test in patients with low-to-intermediate pre-test probability of coronary disease. Recent advances include fractional flow reserve derived from CCTA (FFR-CT).
Usage
Usage note: Always capitalize. Distinguish from general CTA (CT angiography) and CTPA (CT pulmonary angiogram).
In Context
- "CCTA demonstrated mild plaque burden without significant stenosis." — Cardiac CT report
- "The patient underwent CCTA for chest pain evaluation." — Emergency department consultation