Thorotrast Med.
(ˈθɔərəʊtrɑːst, -æ-)
Also thorotrast.
[a. G. thorotrast (A. Weiser 1930, in Wiener med. Wochenschr. 25 Oct. 1428/2), f. thoro- thoro- + kon)trast contrast n.]
A colloidal solution of thorium dioxide formerly used as a contrast medium in radiography.
A proprietary name in the U.S.
| 1932 Official Gaz. (U.S. Patent Office) 5 Apr. 14/2 Heyden Chemical Corporation, New York... Thorotrast for medicinal preparation finding its application in the photography by X-rays for medicinal and similar purposes. 1933 [see angiogram]. 1947 Radiology XLIX. 362/2 The fact that ‘thorotrast’ (a colloidal suspension of thorium dioxide) is frequently used in human diagnostic work. 1976 P. Collard Devel. of Microbiol. x. 136 Animals were injected intravenously with particulate materials, indian ink, colloidal iron or thorotrast. 1977 Lancet 18 June 1297/1 The main long-term sequelæ of thorotrast are local effects and tumours at the site of injection and/or deposit..and fatal blood dyscrasias, including leukæmia and aplastic anæmias. |