The data set includes information on imaging tests carried out from 1 April 2012. It does not include the images that are produced as a result of these tests.
For a full description of each of the fields available in DID, please see the DID extract data dictionary.
The data is linked to Hospital Episode Statistics, through the HES-DID linkage. This enables users to analyse acute secondary care pathways for patients receiving diagnostic imaging tests in England. This analysis could help to identify trends and variation in patient outcomes and be used to improve services for patients.
The linkage adheres to strict Information Governance procedures and customers have to make a formal application and sign a legally binding data sharing contract to access the data.
HES-DID Linkage summary statistics are updated on a monthly basis.