The MONOGAMMA is a Thyroid Uptake System which is available in two versions: one with a static collimator and one with a moving collimator. Both of these versions utilize the GAMMAINTERFACE I/O unit that allows for data transmission of its 2" x 2” NaI(Tl) probe to a personal computer. Its WUPTAKE software which is supplied with the MONOGAMMA will run under the WINDOWS XP operating system. This makes it possible for data acquisition as well as graphical elaboration to happen.