This vascular sonography category is designed for candidates pursuing ARDMS vascular credentials, with strong emphasis on Doppler ultrasound principles, hemodynamics, and vascular pathology. The question bank covers venous insufficiency, thrombosis, arterial stenosis, carotid disease, and peripheral vascular assessment. Content focuses on waveform analysis, velocity criteria, pressure gradients, and diagnostic thresholds used in U.S. certification exams. Questions reinforce technical accuracy, interpretation skills, and exam-level decision-making based on real clinical scenarios. Regular updates ensure alignment with current vascular ultrasound protocols and ARDMS expectations. This category significantly improves exam readiness, Doppler proficiency, and diagnostic confidence for aspiring vascular sonographers. vascular Doppler ultrasound ARDMS circulation