Being an ultrasound technician is an incredibly rewarding field, but if you’re considering a career in sonography, it isn’t enough to simply know what it is that ultrasound technicians do – be sure to familiarize yourself with the many different subspecialties of the field in order to narrow down your interests. Ultrasound has a wide range of uses in a multitude of areas: • Obstetrics and gynecology (OB/GYN)