National Nursing Review : Nursing Study Resources & Health Tips

Is half-invasive for the amount of radiation and for the frequent use of contrast media.
The beam of x-rays used is flat and wide as a sheet perpendicular to the long axis of the body, the three-dimensional image to be reconstructed by a computer corresponds to a cross-section body top few millimeters.

If you hit this picture, you can get a two-dimensional figure which is reproduced on a film, so the body can be analyzed, layer by layer, to that portion of its axis that contains the body structures that are to be analyzed. (more…)