The Brain Imaging Facility, BIF for short, of the IZKF Aachen is the central institution for the conception, execution and evaluation of functional magnetic resonance imaging studies, fMRI, and positron emission tomography studies, PET, within the University Hospital of the Medical Faculty of RWTH Aachen University. At the end of 1997, the Brain Imaging Facility was established as an interdisciplinary subproject of the neuroscientific disciplines within the IZKF Aachen in order to provide the technical and personnel requirements for the performance of functional imaging studies and to coordinate the respective measurements.