title: History of the use and toxicity of thorotrast.
mesh_terms: D003287:Contrast Media / Q000009:adverse effects; D006390:Hemangioendothelioma / Q000209:etiology; D049673:History, 20th Century; D006801:Humans; D007953:Leukemia, Radiation-Induced / Q000209:etiology; D009381:Neoplasms, Radiation-Induced / Q000209:etiology; D011856:Radiographic Image Enhancement; D011859:Radiography / Q000379:methods; D013911:Thorium Dioxide / Q000009:adverse effects / Q000266:history*; D013997:Time Factors
chemical_list: D003287:Contrast Media; D013911:Thorium Dioxide