A portable brain-imaging device invented by scientists at Brookhaven National Laboratory [2] (BNL), a Department of Energy laboratory, is moving closer to commercial market. This new way to "see" inside the body offers promise of a deeper understanding of the brain and the diseases that affect it. The miniaturization of a positron emission tomography (PET) scanner allows for a dynamic range of new applications, including integration with magnetic resonance imaging (MRI) and compact scanners that can be "worn" by fully conscious, active rats (see Press Release [3]). Read more at the DOepatents [4] database, and view related patents to this invention. DOepatents is the central collection of DOE patent information, where research and development intersect with innovation and invention. This collection demonstrates the Department's considerable contribution to scientific progress from the 1940s to today.