An optional pre-fetching module is available for use with the OnePacs Gateway.  This option allows the OnePacs Gateway to query an external DICOM archive (PACS, VNA, etc) for prior exams on receipt of an new DICOM study or order.  This option can be useful to automate the pulling of prior studies for new imaging exams, negating the need for manually pushing relevant priors.  The pre-fetching module can be configured with rules to determine what cases are considered relevant priors based on the subject study.