Direct Clot Visualization Non-Compressibility Deep Vein Thrombosis Pathology Deep Vein Thrombosis False Positives Deep Vein Thrombosis Ultrasound Pocket Card Baker’s Cyst Superficial Thrombophlebitis Lymph Node Pseudoaneurysms Groin Hematoma Transverse View Longitudinal View Augmentation with Color Doppler Deep Vein Thrombosis Scanning Sites Great Saphenous Vein Common Femoral Vein (Superficial) Femoral Vein Popliteal Vein Popliteal Vein Trifurcation Non-Compressibility