title: Detection of gastrointestinal bleeding by radionuclide scintigraphy.
abstract: Scanning with Technetium 99m labeled autologous red blood cells was performed in 59 patients with clinical suspicion of acute and/or intermittent, chronic gastrointestinal bleeding. In 36 patients (61%), a definite site of bleeding could be demonstrated. A strong correlation with other modalities such as upper and lower gastrointestinal endoscopy, contrast angiography, and surgical exploration was found. Overall sensitivity of the procedure was 91%; specificity 100% and accuracy 93.3%. It is suggested that radionuclide scintigraphy provides a completely noninvasive, simple, and sensitive procedure which may be routinely used for the detection and localization of gastrointestinal bleeding.
mesh_terms: D000328:Adult; D000368:Aged; D000792:Angiography; D003113:Colonoscopy; D004912:Erythrocytes; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000601:surgery; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012812:Sigmoidoscopy; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium
chemical_list: D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m