What's a Pediatric Radiologist? Pediatric radiologists are experts in diagnosing illnesses and injuries in children. They are an important part of the care team because they help all of a patient's doctors understand the patient's condition so they can treat it in the best way possible. The pediatric radiologists at Mott understand the unique needs of children and families. Their specialized training helps them better understand how to use tools and techniques differently for children, whose smaller bodies and developing systems aren't just small versions of adults.