1. The production and use of scintigrams or two-dimensional images of the distributions of a radioactive tracer in a body organ; such as, the brain or a kidney, obtained using a special scintiscanner (an apparatus used in diagnosing some diseases that produces an image, a scintigram, of the distribution in the body of a radioactive tracer that has been administered to the patient).
2. The process of producing a scintigram.