Figure 2
From: MR imaging of venous malformations: sciatic nerve infiltration patterns and involved muscle groups

Illustration of the landmarks 1–5 used for measuring nerve cross-section areas and examples of corresponding MR images. All images show venous vascular anomalies with a subepineurial nerve involvement pattern. (A) Axial T2 STIR: Sciatic nerve at landmark 1. (B) Axial T2 TSE: Sciatic nerve at landmark 2. (C) axial T2 STIR: Sciatic nerve at landmark 3 (division into tibial and peroneal nerve). (D) axial T2 STIR: Peroneal (landmark 4) and tibial nerve (landmark 5) distal to their division. The peroneal nerve is highlighted with a circle, the tibial nerve with an asterisk.