A Versatile Gamma-Ray Camera for Dynamic or Static Studies in Medicine

The design of a medical γ ray camera for use in the isotope energy range 150-400 keV is described. It is based on the use of image-intensifiers, yields 1000 picture element definition, and provides discrimination against Compton scatter and other spurious signals. The present camera will accept 30,000 photopeak events/sec, but this is not an ultimate limit. Thus the instrument is well suited to both static and dynamic studies.