title: Brain tumor imaging using C-11-labeled L-methionine and D-methionine.
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D002250:Carbon Radioisotopes; D005260:Female; D006801:Humans; D008297:Male; D008715:Methionine; D008875:Middle Aged; D011877:Radionuclide Imaging; D013237:Stereoisomerism
chemical_list: D002250:Carbon Radioisotopes; D008715:Methionine