bird-beak configuration
Radiographic appearance on imaging where endograft material tapers to a point, resembling a bird's beak, often indicating incomplete seal.
Full Definition
Bird-beak configuration is a descriptive radiographic term used in endovascular aortic repair (EVAR) to describe the appearance of stent graft material that tapers to a sharp point rather than conforming smoothly to the aortic wall. This configuration typically occurs at the proximal or distal landing zones and may indicate incomplete apposition of the endograft to the aortic wall, potentially leading to type I endoleaks. The term is derived from the resemblance to a bird's beak on cross-sectional imaging. Recognition of this finding is important for editors reviewing endovascular literature as it may predict treatment failure.
Usage
Usage note: Use hyphenated form when used as compound adjective; may appear as 'bird beak' in some contexts.
In Context
- "Post-deployment imaging revealed bird-beak configuration at the proximal seal zone." — Radiology interpretation
- "The bird-beak appearance resolved after balloon molding of the landing zone." — Follow-up imaging report