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Everything you need to know about Computed Tomography (CT) & CT Scanning

MDCT of the Spleen:  Thoratrast


Thoratrast was utilized as a contrast material between the 1930's and 1950's. This intravenously injected solution targeted the reticuloendothelium system and contained an alpha emitting, metallic, radioactive element called thorium. This contrast agent gave a high-density appearance to the spleen and liver permitting better evaluation. However, due to the long half-life of thorium, the contrast is essentially permanently retained leaving subjects prone to tumor growth from long-term radioactivity inducing local malignancies and bone marrow dyscrasias.



© 1999-2021 Elliot K. Fishman, MD, FACR. All rights reserved.