An Emergency Room (ER) Doctor treats infections and injuries in a hospital emergency room or urgent care facility. They are medical doctors with extensive residency training in an emergency room. Their duties include requesting medical tests, performing follow-up visits, and creating treatment plans.
Otolaryngology is a medical specialty which is focused on the ears, nose, and throat. It is also called otolaryngology-head and neck surgery because specialists are trained in both medicine and surgery. An otolaryngologist is often called an ear, nose, and throat doctor, or an ENT for short.
Radiology is a branch of medicine that uses imaging technology to diagnose and treat disease. Radiology may be divided into two different areas, diagnostic radiology and interventional radiology. Doctors who specialize in radiology are called radiologists.