Gastrointestinal bleeding scintigraphy performed with 99mTc-labeled autologous
erythrocytes or historically with 99mTc-sulfur colloid has been a clinically useful tool since …

GI bleeding scintigraphy is performed in patients sus pected of having active gastrointestinal
bleeding using" Tc-labeled red blood cells (RBCs). Sites of active bleed ing are identified by …

Gastrointestinal (GI) bleeding is a life-threatening presentation that the physician must
recognize and manage appropriately. Nuclear medicine provides methods that can help …

The clinical consequences of lower gastrointestinal bleeding range from trivial to life-
threatening. Nuclear medicine imaging techniques allow identification of those patients who …

Lower Gastrointestinal Hemorrhage Page 1 The Use of T echnetiam—Labeled Erythrocyte
Seintigraphy in the Evaluation and Treatment of Lower Gastrointestinal Hemorrhage CHARLES …

Twenty pediatric patients presenting primarily with unexplained gastrointestinal bleeding
were evaluated with sodium pertechnetate Tc 99m imaging. Three patients had normal …

Imaging was done in 80 patients with gastrointestinal hemorrhage using red blood cells
labeled with 99mTc by a modified in vivo technique. Bleeding was detected in 65% of 40 …

Using a modified in vivo Tc-99m red cell labeling technique, gastrointestinal (GI) bleeding
scintigraphy was performed in 100 patients with GI bleeding. Sixty-two patients with melena …

Two recent advances have significantly improved the ability of labeled red cell imaging to
localize and to detect sites of active gastrointestinal bleeding. The first is the use of …

99m Technetium-labeled red blood cell scintigraphy was performed upon 39 patients with
clinical evidence for acute lower gastrointestinal bleeding from an unknown source …