Dr. Halley Park practices Pediatric Radiology in MIAMI, FL. A pediatric radiologist is an expert in the diagnosis of illnesses, injuries, and diseases of infants, children, and adolescents, using imaging techniques and equipment. Dr. Park has expertise in selecting the best imaging techniques to diagnose medical and surgical problems. Some of those techniques include x-ray, ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), and nuclear medicine.