QCA
Also written as: QCA — Quantitative Coronary Angiography
Computer-assisted analysis technique for precise measurement of coronary vessel dimensions and stenosis severity.
Full Definition
Quantitative Coronary Angiography employs sophisticated computer algorithms to provide precise, objective measurements of coronary artery dimensions, including vessel diameter, area, and percent stenosis. QCA analysis eliminates subjective visual estimation inherent in conventional angiographic interpretation, offering reproducible quantitative data essential for research studies and clinical decision-making. The technique requires high-quality angiographic images with proper calibration using catheter dimensions or other reference objects. QCA measurements are crucial for evaluating intervention outcomes, progression of coronary disease, and determining the significance of intermediate lesions when physiological assessment is unavailable.
Usage
Usage note: Include reference vessel diameter and methodology when reporting QCA measurements.
In Context
- "QCA analysis revealed 78% diameter stenosis in the proximal LAD with 2.1 mm reference vessel diameter." — Angiographic analysis report
- "Post-intervention QCA demonstrated optimal stent expansion with 0% residual stenosis." — Procedural outcome documentation