title: Pitfalls of gastrointestinal bleeding studies with 99mTc-labeled RBCs.
mesh_terms: D004912:Erythrocytes; D005189:False Positive Reactions; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006391:Hemangioma / Q000000981:diagnostic imaging*; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m
chemical_list: D013670:Sodium Pertechnetate Tc 99m