00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| any of the bones of the wrist. |
| the tongue. |
| contrast medium | |
| —n | |
| med a radiopaque substance, such as barium sulphate, used to increase the contrast of an image in radiography | |
contrast medium n.
A substance, such as barium or air, used in radiography to increase the contrast of an image. A positive contrast medium absorbs x-rays more strongly than the tissue or structure being examined; a negative contrast medium, less strongly.
| contrast medium (kŏn'trāst') Pronunciation Key
A substance, such as barium or air, used in radiologic studies to increase the contrast of an image. In x-ray imaging, a positive contrast medium absorbs x-rays more strongly than the tissue or structure being examined; a negative contrast medium, less strongly. |