Intravascular Ultrasound in the diagnosis and treatment of chronic cerebrospinal venous insufficiency

Captions for illustrations

Figure 1. Normal internal jugular IVUS

IVUS from the transverse sinus (A) to the confluens with the subclavian vein (B). Note compression of the carotid artery of the J2 segment of the IJV (F).

Index: 1. Transverse sinus tributary, possibly posterior cerebral vein or condylar emissary vein. 2. Inferior petrosal vein entering sigmoid sinus; 3. Pharyngeal veins in upper IJV; 4. Facial vein; 5. Superior thyroid veins; 6. Inferior thyroid veins; 7. Confluens of IJV with subclavian vein.