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Radionuclide localization of lower gastrointestinal hemorrhage

Journal Article · · Radiology; (United States)
The authors prospectively evaluated the usefulness of abdominal radionuclide scintigraphy using /sup 99m/Tc-labeled red cells as a means of monitoring for intermittent gastrointestinal bleeding over a 24-hour period in both control and actively bleeding populations. Of 32 patients with documented hemorrhage, 29 had positive scintiscans (sensitivity, 91%; 9% false negatives). Of 18 nonbleeding patients, 17 had negative scintiscans (specificity, 95%; 5% false positives). 12 of 29 patients bled from 6 to 24 hours after the study was begun. Scintiscans were positive in patient with transfusion requirements of greater than or equal to 500 ml/24 hr. The authors conclude that abdominal scintigraphy with /sup 99m/Tc-labeled red cells is an effective method of detecting gastrointestinal bleeding.
Research Organization:
Harvard Medical School, Boston, MA
OSTI ID:
6502687
Journal Information:
Radiology; (United States), Journal Name: Radiology; (United States) Vol. 139:2; ISSN RADLA
Country of Publication:
United States
Language:
English