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. Interventional radiologists are doctors that use imaging such as CT, ultrasound, MRI, and fluoroscopy to help guide procedures. The imaging is helpful to the doctor when inserting catheters, wires, and other small instruments and tools into your body. This typically allows for smaller incisions (cuts). Doctors can use this technology to detect or treat conditions in almost any part of the body instead of directly looking inside of your body through a scope (camera) or with open surgery. Interventional radiologists often are involved in treating cancers or tumors, blockages in the arteries and veins, fibroids in the uterus, back pain, liver problems, and kidney problems. The doctor will make no incision or only a very small one. You rarely need to stay in the hospital after the procedure. Most people need only moderate sedation (medicines to help you relax). Clinical radiology is a specialised branch of medicine that uses state of the art equipment and a range of techniques to capture images of the inside of the body. Clinical radiologists (radiologists) are qualified medical doctors who have undertaken another five years of additional study and intensive training to specialise in their field. Clinical radiology uses three main kinds of imaging to create images of the inside of the body. These are: X-rays  and CT (computed tomography)  scans(previously called CAT scans), which use ionising radiation in the form of x-radiation to image the body MRI (magnetic resonance imaging) scans which measures the radio waves emitted while in an external.