Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Configuration of the posterior part of the circle of Willis and presence of a perforator
| Configuration | Hemispheres (%) | Perforator present/not present (%) |
|---|---|---|
| Foetal (PCoA > P1) | 16 (17.4%) | Present: 12 (75.0%) |
| Not present: 4 (25.0%) | ||
| Non-foetal(PCoA < P1) | 65 (70.7%) | Present: 40 (61.5%) |
| Not present: 25 (38.5%) | ||
| Subtotal | 81 (88.1%) | Present 52 (64.2%) |
| Not present: 29 (35.8%) | ||
| No PCoA | 11 (11.9%) | Present: 0 (0%) |
| Not present: 11 (100%) | ||
| Total | 92 (100%) | Present: 52 (56.5%) |
| Not present: 40 (43.5%) |
