Medical X-rays identify bony and soft tissue structures. The most common medical use of X-ray is the Diagnostic X-Ray, which examines the body using basic x-ray techniques. There are two types of X-ray images, radiographs (still images) or fluoroscopy (“real time” images). Fluoroscopy uses video cameras to visualize internal motion in real time. Some X-ray exams require either drinking or injecting a “contrast” material to better outline structures to be soon on the image; however, most don’t require any special preparation.