Gallbladder Activity on 99mTc-Labeled Red Cell Scintigraphy Confirmed by SPECT/CT Imaging.

Tc-99m-labeled red cell (Tc-99m-RBC) scintigraphy is commonly used to detect gastrointestinal bleeding. Gallbladder visualization on Tc-99m-RBC scintigraphy is not common. We present a case of gallbladder visualization on Tc-99m-RBC scintigraphy confirmed by SPECT/CT imaging in a patient with chronic renal failure and anemia.