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Gastrointestinal Bleeding Scintigraphy in the Early 21st Century
1Section of Nuclear Medicine, Department of Radiology, Christiana Care Health System, Newark, Delaware egrady@christianacare.org.
Abstract:
Gastrointestinal bleeding scintigraphy performed with (99m)Tc-labeled autologous erythrocytes or historically with (99m)Tc-sulfur colloid has been a clinically useful tool since the 1970s. This article reviews the history of the techniques, the different methods of radiolabeling erythrocytes, the procedure, useful indications, diagnostic accuracy, the use of SPECT/CT and CT angiography to evaluate gastrointestinal bleeding, and Meckel diverticulum imaging. The causes of pediatric bleeding are discussed by age.
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