POPULATION SERVED: Core competencies will be assessed primarily on the following patient population(s) served: Cardiovascular, GI, GU, GYN conditions and diseases including but not limited to: cholecystitis, BPH, oncology, uterine fibroids, fetal ultrasound, etc. Ensures operation of ultrasound equipment by completing preventive maintenance requirements; following manufacturer's instructions; troubleshooting malfunctions; calling for repairs; maintaining equipment inventories; evaluating new equipment and techniques.