title: Technetium-99m-labelled red blood cell scanning to diagnose occult gastrointestinal bleeding.
abstract: The authors, from their experience in 60 patients, demonstrate that technetium-99m-labelled red blood cell scintigraphy is a sensitive (91%) and specific (76%) diagnostic procedure with a high predictive value, when both positive (81%) and negative (92%). It is preferable to and more cost-effective than selective angiography as a first-line diagnostic test for occult gastrointestinal bleeding.
mesh_terms: D002429:Cecal Diseases / Q000000981:diagnostic imaging; D004912:Erythrocytes; D005189:False Positive Reactions; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008467:Meckel Diverticulum / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D012810:Sigmoid Diseases / Q000000981:diagnostic imaging; D013272:Stomach Diseases / Q000000981:diagnostic imaging; D013667:Technetium
chemical_list: D013667:Technetium