An "Inside" Look at Diagnostic X-Ray
X-RAYS are used for studying the inside of the body because:
- they can penetrate body tissues
- they have a photographic effect
- they can project an image of the body at work onto a T.V. monitor
NEW DEVELOPMENTS are making the procedure even safer and more effective- producing clearer radiographs with less exposure to radiation.
1. The X-Ray Machine
is a delicate instrument that sends out X-rays in a controlled manner, so that a small, carefully calculated amount of radiation is directed toward a specific part of the body.
2. The X-Ray Process
As X-rays pass through the body, radiation is absorbed by denser parts and easily penetrates the less dense parts. The result is an image on the film placed on the other side of the body.
3. The X-Ray Picture
-- called a RADIOGRAPH -- is a permanent picture of the internal body. It looks like a photo negative. Dark areas represent the least dense structures; white areas, the most dense structures.
4. Interpreting the Radiograph
The radiograph isn't an exact reproduction of the inside of the body; rather, it's a record of the various densities of the body. Tissues of the same density (which don't show up in a radiograph) can sometimes be identified through special procedures. Radiologists are physicians who have the training necessary to interpret radiographs.
Some Common Uses of Diagnostic X-Ray
Examining the CHEST-- a very common exam. Radiographs can show diseases of the heart and lungs.
Studying BONES-- taking radiographs from several angles to show relationships between bones and adjacent tissues; useful for checking fractures.
Checking the DIGESTIVE SYSTEM to detect disease, ulcers, etc., in the early stages if possible.
Searching out FOREIGN BODIES in any part of the body. X-ray pictures are taken at different angles to find the exact location.
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