SON 2175L - Vascular Sonography Lab 2 SON 2175L - Vascular Sonography Lab 2 Students will learn protocols, image optimization, patient positioning, and indications for exams. Studies covered include: indirect arterial, lower extremity arterial and venous, upper extremity arterial and venous, vein mapping, venous insufficiency, and abdominal vasculature. Occupational (A.S. and A.A.S.)