$Unique_ID{BRK00807}
$Pretitle{}
$Title{How Does a CT Test Work?}
$Subject{CAT scan CT Special Procedures procedure lab Laboratory Tests test
computer Computerized Tomography pencil-thin x-ray beams video screens axial}
$Volume{P-0}
$Log{}

Copyright (c) 1991-92,1993   Tribune Media Services, Inc.


How Does a CT Test Work?


------------------------------------------------------------------------------

QUESTION:  Can you provide me some information about a CT test?  Does it hurt?
How does it work?  My father was told he needed one and I am concerned.

------------------------------------------------------------------------------

ANSWER:  CTs are initials that stand for Computerized Tomography.  CTs produce
pictures of a patient's head, or body, using computers to interpret the
information obtained by x-rays.  Such photos are usually used by physicians to
pinpoint locations of blood clots, tumors, bleeding, infections, or to find
the reason for increasing pressure on the brain.
     No pain or discomfort is experienced by the patient having a CT test.
The only requirement is that they lie absolutely still so that sharp pictures
may be obtained.  During such tests, patients lie on a table carefully
positioned in the middle of the area that the scanner photographs.  The table
moves slightly every few seconds, and repositions the patient.  Approximately
10 to 15 pictures are taken during the testing time of between 30 to 60
minutes.
     CTs produce pencil-thin x-ray beams which first are displayed on video
screens, then are photographed.  There are no known aftereffects, so normal
activities may be resumed immediately following a CT examination.

----------------

The material contained here is "FOR INFORMATION ONLY" and should not replace
the counsel and advice of your personal physician.  Promptly consulting your
doctor is the best path to a quick and successful resolution of any medical
problem.