Alliance Imaging provides diagnostic medical imaging services in the following medical modalities: MRI, PET, PET/CT and CT. This patient information is intended to complement, not replace, information from your referring physician. Please direct all your specific diagnostic medical imaging questions to your referring physician. For additional patient information visit www.radiologyinfo.org, a public information site developed and funded by the American College of Radiology (ACR) and the Radiological Society of North America (RSNA).