Northern California Positron Emission Tomography Imaging Center, located in Sacramento, is a clinical facility for brain, cardiac, and whole-body imaging using short-lived positron emitter-labeled radiopharmaceuticals and the tomographic imaging system. A collaborative research program between the Center for Neuroscience and NCPIC has placed duplicate computer systems in the two centers to ensure consistency among patient studies of brain electrical activity at the Center for Neuroscience and PET studies at NCPIC.