title: Detection of gastrointestinal bleeding sites. Use of in vitro technetium Tc 99m-labeled RBCs.
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D000208:Acute Disease; D000328:Adult; D000368:Aged; D004912:Erythrocytes; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008551:Melena / Q000000981:diagnostic imaging; D008875:Middle Aged; D011877:Radionuclide Imaging; D013667:Technetium / Q000008:administration & dosage
chemical_list: D013667:Technetium