SUMMARY. The OB/GYN Ultra sonographer is a Registered Diagnostic Sonographer who demonstrates expertise and serves as a resource for theoretical and clinical practice of ultrasound. QUALIFICATIONS. High School diploma or equivalent. Graduate from an accredited school of Ultrasonography preferred. Current ARDMS Certification or eligible to sit for boards. Must Possess the ability to perform OB/GYN Ultrasonography including 1st, 2nd, 3rd trimester ...