KEYWORDS: Relays, Medicine, Picture Archiving and Communication System, Medical imaging, Telecommunications, Network security, Internet, Data communications, Computer security, Diagnostics
Diagnostic tools supported by digital medical images have increasingly become an
essential aid to medical decisions. However, despite its growing importance, Picture Archiving and Communication Systems (PACS) are typically oriented to support a single healthcare
institution, and the sharing of medical data across institutions is still a difficult process. This
paper describes a proposal to publish and control Digital Imaging Communications in Medicine
(DICOM) services in a wide domain composed of several healthcare institutions. The system
creates virtual bridges between intranets enabling the exchange, search and store of the medical data within the wide domain. The service provider publishes the DICOM services following a token-based strategy. The token advertisements are public and known by all system users. However, access to the DICOM service is controlled through a role association between an access key and the service. Furthermore, in medical diagnoses, time is a crucial factor. Therefore, our system is a turnkey solution, capable of exchanging medical data across firewalls and Network Address Translation (NAT), avoiding bureaucratic issues with local network security. Security is also an important concern - in any transmission across different domains, data is encrypted by Transport Layer Security (TLS).
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