CPRD GOLD linked Hospital Episode Statistics Diagnostic Imaging Dataset (HES DID) is a collection of detailed information about diagnostic imaging tests, such as x-rays and MRI scans, taken from NHS providers' radiological information systems. HES DID includes information on imaging tests carried out from 1 April 2012 on NHS patients in England. It does not include the images that are produced as a result of these tests. The DID captures information about referral source and patient type, details of the test (type of test and body site), plus items about waiting times for each diagnostic imaging event, from time of test request through to time of reporting. HES DID enables analysis of demographic and geographic variation in access to different test types and different providers, enabling users to analyse patient care pathways.