A term which covers the variety of technologies which result in pictures (images) of body structures or functioning. The first imaging technology was, perhaps, medical illustration. Then came conventional radiology (x-ray). The next technology to gain prominence was computed tomography (CT) scanning. To these have been added magnetic resonance imaging (MRI), diagnostic ultrasound, single photon emission computer tomography (SPECT), and positron emission tomography (PET). Many former Departments of Radiology in hospitals are now called Departments of Imaging. Unfortunately, the archivists have also started using the term “imaging (archival)”, particularly in connection with storage of medical records. The reader now must often inquire as to which meaning is intended.