title: The RSNA historic symposium on American Radiology: then and now.
mesh_terms: D000792:Angiography / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D007089:Image Enhancement; D010506:Periodicals as Topic; D011634:Public Health; D013902:Radiography, Thoracic; D011871:Radiology / Q000193:education / Q000266:history*; D011877:Radionuclide Imaging / Q000266:history; D011878:Radiotherapy / Q000266:history; D012955:Societies, Medical; D014481:United States