Thorotrast
Thorotrast
Thorotrast (/θɔːroʊtræst/) is a radioactive contrast agent that was used in radiography in the mid-20th century.
Etymology
The term "Thorotrast" is derived from the element thorium, which is the active ingredient in the contrast agent, and the word "contrast", which refers to its use in radiography.
Usage
Thorotrast was used primarily between the 1930s and 1950s as a contrast medium in angiography, a medical imaging technique used to visualize the inside of blood vessels and organs of the body. It was eventually discontinued due to its radioactive properties and the long-term health risks associated with its use.
Health Risks
The use of Thorotrast has been linked to an increased risk of several types of cancer, including liver cancer, leukemia, and lung cancer. The risk is believed to be due to the radioactive thorium-232, which can remain in the body for many years after administration.
Related Terms
- Contrast agent: A substance used to increase the contrast of structures or fluids within the body in medical imaging.
- Radiography: The use of X-rays or other forms of radiation to view the internal structures of the body.
- Angiography: A medical imaging technique used to visualize the inside of blood vessels and organs of the body.
- Thorium: A weakly radioactive metallic chemical element with the symbol Th and atomic number 90.
External links
- Medical encyclopedia article on Thorotrast
- Wikipedia's article - Thorotrast
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