X-ray, also called general or diagnostic radiography, has long been a valuable tool in the diagnosis of internal injuries and other medical conditions.
X-ray exams work by sending beams of energy through the body. Bones and other dense materials, like a foreign object inside the body, absorb more of this energy than organs and soft tissues absorb. A special X-ray camera detects this energy to produce pictures of the internal structures. The bones appear white or gray on the x-ray image, while soft tissues appear darker.
Fluoroscopy is an X-ray imaging technique that captures moving pictures of internal structures and displays them on a video monitor like a movie. Radiologists can use fluoroscopy to view internal organs in motion and, with the help of contrast material, to assess organ function. The tool is also used to guide needle placement during myelography and joint injections.