[The examination pattern at an x-ray department over a 25 year period].

The pattern of examinations at the x-ray department of Buskerud sentralsykehus has changed over the last 25 years. Heart- lung- and skeleton examinations remain unchanged, and represent 71 to 79% of the total number, but there has been a marked charge in other examinations. Through the years there has been a marked decline in the number of "classical" contrast medium examinations of gallbladder/gall-paths, gastroduodenal examinations and intravenous pyelography. Air-encephalography has disappeared, and arthrography is about to disappear as an x-ray examination. New methods, such as computer-tomography and ultrasonography and non-radiological examinations, such as gastroscopy and arthroscopy, seem to be the main reason for this change, but other factors, such as change in disease patterns and therapeutic procedures may also have contributed.