SON 2121L - Obstetrics and Gynecology Sonography Lab 1 SON 2121L - Obstetrics and Gynecology Sonography Lab 1 Students will practice scanning techniques, protocols, image optimization, patient positioning, technical impression worksheets, terminology, and mock physician presentations for transabdominal pelvic and first trimester obstetric ultrasound exams. Occupational (A.S. and A.A.S.)