QFR
Also written as: QFR — Quantitative Flow Ratio
Novel angiography-based method for assessing coronary stenosis functional significance without pressure wire.
Full Definition
Quantitative Flow Ratio (QFR) is an innovative computational technique that estimates fractional flow reserve using only standard coronary angiography images without the need for pressure wire or hyperemic agents. The technology applies fluid dynamics principles and 3D vessel reconstruction to calculate the pressure drop across coronary stenoses. QFR has shown good correlation with invasively measured FFR and offers the advantage of retrospective analysis from existing angiographic data, potentially reducing procedural time and cost while maintaining diagnostic accuracy for functional stenosis assessment.
Usage
Usage note: Distinguish from invasively measured FFR; specify 'QFR-derived' when clarity needed.
In Context
- "QFR analysis suggested functional significance of the intermediate lesion, prompting pressure wire assessment." — Catheterization report
- "The QFR-guided approach reduced procedure time while maintaining diagnostic accuracy." — Comparative study