Imaging Study Reference:, a joint development of the American College of Radiology (ACR) and the Radiological Society of North America (RSNA), is an extensive web resource that provides information about radiologic procedures, the role of radiology in healthcare, and concise and accurate descriptions of individual radiology imaging studies. The site not only explains studies from a patient’s perspective – giving information about what to expect and how the study is done – but it also has videos and images that provide additional depth.