We offer MRI, CT, PET-CT, X-ray, DEXA (an advanced type of X-ray that measures bone density) and ultrasound. In addition, we provide a range of breast imaging services, including screening and diagnostic mammograms, breast ultrasound exams, and image-guided biopsies using mammography or ultrasound. Our state-of-the-art PET-CT scanner, the Biograph Vision 450, can detect very small changes in the body. The outstanding image quality improves accuracy and allows us to provide more precise diagnoses and more personalized care. We also can collect images more quickly, which shortens the exam time and lowers the radiation dose. If you're an established UCSF patient, you may be able to schedule some appointments via MyChart. X-ray exams are on a walk-in basis and do not require an appointment. For annual screening mammograms, new and existing patients can book a mammogram appointment online.