In general, "radiology" refers to medical imaging techniques, employing advanced computers and other complex equipment, that allow doctors to see inside a patient's body. Although the word "radiology" implies radiation, not all of the techniques actually use radiation. And although radiology is most commonly used for diagnosis, sometimes it's used therapeutically -- that is, for treatment. Most of the actual imaging is carried out by highly trained people called "technologists." The images of the inside of the body that the technologist generates might be pieces of film, such as X-rays, or they might be computer pictures that are viewed on a monitor. The pictures are then analyzed by specially trained doctors called "radiologists."

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