Table 1 Color Doppler ultrasound criteria of FMD
From: Color Doppler imaging of cervicocephalic fibromuscular dysplasia
1. Morphological criteria: |
|---|
Segmental string-of-beads pattern with alternating regions of lumen narrowing and vessel dilatation |
2. Localization: |
Distal extracranial part of ICA (VA). |
3. Hemodynamics (optional): |
Direct and/or indirect criteria of stenosis (in distal extracranial part of ICA / VA). |