reference vessel diameter
Also written as: RVD — Reference Vessel Diameter
The diameter of a coronary artery segment adjacent to but unaffected by stenotic disease, used as a baseline measurement.
Full Definition
Reference vessel diameter (RVD) represents the normal caliber of a coronary artery in segments proximal and distal to a stenotic lesion, providing a baseline measurement for comparison. This parameter is essential in quantitative coronary angiography for calculating percent diameter stenosis and determining appropriate stent sizing. RVD is typically measured in millimeters and represents what the vessel diameter would be in the absence of disease. Accurate RVD measurement is crucial for proper device selection and procedural planning, as undersizing or oversizing interventional devices can lead to suboptimal outcomes. The measurement should be taken from healthy vessel segments that appear free of disease or remodeling.
Usage
Usage note: Ensure measurements are taken from disease-free vessel segments.
In Context
- "The reference vessel diameter was 3.2 mm, indicating need for a large-caliber stent." — Procedural report
- "Reference vessel diameter measurements guided stent selection." — Interventional case study