Fluoroscopy: X-rays are taken using a fluorescent screen by passing the equipment through the patient. The method of functioning of fluoroscopy is that when the rays of light energy the fluorescent plate absorbs it glows as a result of it. In this way images of the body tissues are taken. The scans of the mobile body organs like heart, intestinal systems are taken using fluoroscopic technique. These films when taken from different position changing at the same time give a good diagnostic idea to the physician about the disease process. While doing this procedure a radiologist can at the same time perform radiologic interventions like any abscess drainage, bleeding occlusion in any vessels, placement of catheters for drainage etc.,
Tomography: X-ray films are taken in series of any layer of body selectively. Numerous picture of the same area from front and behind are taken. These films are called tomograms. The films are taken as slices. Any firm lesions or any calcification missed from other x-ray types can be found by these sliced films.