The Mouse Imaging Program (MIP) is a large scale imaging resource supported in part through an NCI U24 grant. The resource provides the larger Harvard/MIT research community with access to state-of-the-art in vivo imaging technologies including high resolution magnetic resonance (MR), computed tomography (CT), positron emission tomography-CT (PET-CT), single photon emission computed tomography-CT (SPECT-CT), fluorescence mediated tomography (FMT) and bioluminescence imaging (BLI). The integrated Program also provides mouse holding facilities for serial imaging, surgery, anesthesia, veterinary care and imaging agents. Image reconstruction, 3D display, fusion, quantitative image analysis and server access are also available. The Program offers periodic training and performs its own research in order to continue to improve existing imaging technologies. Imaging requests from investigators of the Mouse Model of Human Cancers Consortia and recipients of NCI grants are prioritized.