"Related study retrieval" policies are applied at the gateway transmission computer which sends studies to OnePacs.
These policies are used by the gateway, through its interface with external PACS systems, at the time a study is sent to OnePacs, to attempt to search for and retrieve additional relevant studies (e.g., "priors") for the same patient.
Related study retrieval policies currently containing a "Study Matching" policy, plus a limit as to the maximum number of related studies to retrieve according to the matching study policy.