Definition of "radiopaque" [radiopaque]

• Not allowing the passage of x-rays or other radiation. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It is important to remember that multivitamins with iron contain a smaller quantity of elemental iron and are therefore, less radiopaque than preparations such as ferrous sulfate and that partially dissolved tablets will not be as radiopaque as undissolved tablets."
• "Gastric emptying via emesis or lavage should be performed in patients who have ingested greater than 40-60 mg./kg. of elemental iron or an unknown amount. 1 Activated charcoal is not useful, unless there are co-ingestants, since it does not bind metals such as iron. 1 Iron tablets are radiopaque, therefore, an abdominal radiograph should be performed to determine if there is evidence of iron tablets in the stomach or small bowel."
• "HSG requires the insertion of a cannula through the cervix into the uterus through which radiopaque contrast medium is injected and followed by radiographs or fluoroscopy in order to determine that the fallopian tubes are open."