QCA
Also written as: QCA — Quantitative Coronary Angiography
Quantitative coronary angiography, a computerized method for precise measurement of vessel dimensions and stenosis severity.
Full Definition
QCA stands for quantitative coronary angiography, an advanced imaging analysis technique that uses computer algorithms to provide precise measurements of coronary artery dimensions, stenosis severity, and other morphologic parameters. Unlike visual estimation, QCA offers objective, reproducible measurements by analyzing the contrast-filled vessel lumen from angiographic images. This technology is extensively used in clinical trials to ensure standardized endpoint assessment and in clinical practice for complex cases requiring precise measurements. QCA can measure reference vessel diameter, minimum lumen diameter, percent diameter stenosis, and lesion length with high accuracy.
Usage
Usage note: Distinguish from visual assessment when documenting measurements.
In Context
- "QCA analysis revealed a 67% diameter stenosis in the mid left anterior descending artery." — Research study report
- "Serial QCA measurements were obtained to assess late lumen loss at six-month follow-up." — Clinical trial documentation