Peripheral Venous Duplex Cephalic vein Basilic vein Subclavian vein Axillary vein Brachial vein Inferior venae cava External iliac vein Common femoral vein Superfiscial femoral vein Profunda femoral vein Popliteal vein Anterior tibial vein Posterior tibial vein peroneal vein Medial and lateral circumflex vein Gastrocnemius vein Soleal vein Great Saphenous Vein Anterior accessory great saphenous Posterior accessory great saphenous Small Saphenous Vein (Vein of Giacomini) Tributary veins Perforators Lateral subdermic venous plexus AL – Anterolateral accessory saphenous (AASV/MASV) PM – Posteromedial accessory saphenous (PASV/LASV) SEP – Superficial external pudendal DEP - deep external pudendal SE – Superficial and deep epigastric SCI – Superficial circumflex iliac Thigh extension (TE) of the SSV Giacomini vein PERFORATING VEINS Boyd's Perforators Dodd's Perforators Hunterian Perforators Peripheral Venous Duplex Technique Doppler color Ultrasound 1-SPONTANEOUS FLOW 2-PHASIC FLOW 3-VALSALVA RESPONSE 4-AUGMENTATION 5-UNIDIRECTIONAL FLOW 6-Compressibility of veins Compression ultrasound Peripheral Venous duplex Normal Sonographic Appearance 1 Patency 2 Diameter 3 Reflux 4 Wall abnormality 5 Doppler waveform and respiratory variations 6 Thrombus echogenicity and recanalization process Venous valves Valve cusps of LSV Hypoplastic LSV