Abstract
This is the third of a series of continuing education articles on radiopharmaceuticals. After reading and studying this article, the Nuclear Medicine Technologist will be able to: (1) discuss technical considerations of labeling leukocytes with In-111, and for imaging In-111 such as activity administered, imaging times, the collimator of choice, window settings; and (2) discuss the clinical utility of In-111 leukocyte imaging.