Figure 1.

Distribution of white blood cells labeled with indium-111 in human. White blood cells labeled with indium-111 are commonly administered to humans to detect infection and imaged at 20 hours post-administration. The present anterior and posterior whole body images were acquired at 24 hours post-administration. Region-of-interest analysis of anterior image demonstrated that 72% of the labeled white blood cells were located in the bone marrow with the remainder in the liver and spleen.