Putting the “C” Back in PACS: A HIPAA-Compliant
Instant Messaging Tool for Diagnostic Imaging |
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| Authors: |
| Ross W. Filice, MD, University of Maryland; Max Warnock; Wayne LaBelle, Micah Adams |
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| Background: |
| We have instituted a HIPAA-compliant chat client into our every day clinical workflow, which encourages communication, while decreasing interruption by using its inherent asynchronous nature. The chat application is integrated with our picture archiving and communication system (PACS) client to provide easy access to study specific information and to allow study sharing. Communications are logged at a granular level, which allows for better documentation of critical findings communication with return-receipt. This technology is currently used for communication between radiologists, our radiology IT department, and other departmental assistants.
With the modernization of radiology departments, there is an increasing need for a better means of communication. Radiologists are now more likely to be clustered by modality or by organ systems, which provides advantages of being closer to patients, scanners, and technologists, but raises barriers to communication. Similarly, there is less likely to be one central reading room where clinicians can consult radiologists. Teleradiology has become an integral part of night and weekend coverage for many departments. Finally, with the increasing availability of web-based image viewing, clients and fully functional radiologist-grade PACS applications, clinicians are understandably less motivated to consult radiologists in person. Lack of communication is frequently cited by the Joint Commission as a major contributor to sentinel events(1), so it is incumbent upon radiology departments to provide channels for improved communication in today’s clinical environment.
Many new forms of communication exist today, including technology which allows real-time communication over the Internet, as best exemplified by Google Talk(2). However, because of the sensitive nature of medical communication, which includes patient identifying information and the need to be HIPAA-compliant, outside technologies are not suitable for the clinical environment. Also, these outside technologies do not provide integration into PACS or other hospital information systems. Fortunately, the same technologies are available as open standards and open-source software, such that a radiology department can easily implement a secure intra-departmental platform for communications. |
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| Evaluation: |
| The implementation of “Radiology Chat” utilizes web and messaging standards, as well as freely available open-source projects. An extensible message passing protocol (XMPP)(3) server called eJabberd(4) was configured on the department’s intranet to act as a HIPAA-compliant internal communications platform. The server was also configured to use the existing departmental light weight directory access protocol (LDAP)(5) server for single sign-on authentication. |
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Figure 1 |
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| A web-based chat client was built using JavaScript and the bidirectional streams over synchronous HTTP (BOSH)(6) protocol to connect to the XMPP server. The chat client provides the user with a roster of individuals and their status. Status can be set to available, offline, away, or do not disturb. (Fig. 1) The user can select individuals from the roster and send messages to him/her. (Fig. 2) Additionally, standardized macros are provided for common messages such as “Please contact the referring physician for this patient/study.” (Fig. 3) |
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Figure 2 |
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Figure 3 |
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To better incorporate the chat client into the radiologist workflow, an integration was created between the chat client and the PACS client using a Microsoft Component Object Model (COM)(7). A button is provided in the chat client that sends the context of the PACS to another user by sending a link that the receiving user can click on to automatically load the study in their PACS client. Study specific information is automatically sent when using one of the standard macros in cases where a user needs more information on a study, or otherwise needs to quickly send information such as the medical record number or accession number.
In very preliminary stages, we have logged 1,263 individual conversations from clinical users and our radiology IT department over the course of approximately two weeks.
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| Discussion: |
| We have used existing open communication standards and open-source software to institute a real-time intra-departmental HIPAA-compliant means of communication which is integrated with our PACS. This application is currently used in the clinical workflow for communication between radiologists, as well as between radiologists and Radiology IT. Not only does this tool make communication easier and foster collaboration, but the asynchronous nature minimizes interruption to the busy radiologist. Presence and status messages provide added information not available in traditional communication technologies, which allows users to identify whether others are available or not. Additionally, all communications are logged, which provides easier documentation and allows search and retrieval of prior conversations. We plan to extend this functionality throughout the enterprise to engage other clinical departments and to improve inter-departmental communication. One highly attractive potential use case is for critical results communication with logging of the conversation, as well as documentation of return receipt, putting more control of the clinical consultation in the radiologist’s hands.
Because existing open standards for message passing were used, other commercial and open-source applications such as Apple’s iChat(8) or Pidgin(9) are able to connect to the internal chat server. Though these third party clients do not provide PACS integration, they give the users the option of turning their existing chat clients into a HIPAA-compliant clinical tool. This also significantly lowers the barrier to entry in that a radiology department only needs to install a readily available open-source XMPP server, such as eJabberd, to implement a chat communication solution. Only configuration is required to implement the basic functionality; additional development is optional. Regardless of the client used to connect to the chat server, all messages can be stored and transmitted completely within the department intranet, thus maintaining HIPAA compliance. All chats and messages are logged to a granular level with timestamps to provide usage statistics for later analysis, as well as clinical documentation.
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| Conclusion: |
| We have instituted and describe how to incorporate a new means of communication into a radiology department using existing open standards and open-source technologies. This will hopefully improve communication, provide a better means for logging of communication and establishment of return-receipt, and ultimately improve patient care and decrease sentinel events. While we are currently in very preliminary stages, conversations are being continually logged, and we hope to soon provide more robust data analysis. |
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| References: |
1. Joint Commission Sentinel Events. http://www.jointcommission.org/SentinelEvents
2. Google Talk. http://www.google.com/talk
3. XMPP Standards Foundation. http://xmpp.org
4. The Erlang Jabber/XMPP Daemon. http://www.ejabberd.im
5. Lightweight Directory Access Protocol. http://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol
6. Bidirectional Streams Over Synchronous HTTP. http://xmpp.org/extensions/xep-0124.html
7. Component Object Model Technologies. http://www.microsoft.com/com
8. Apple iChat. http://www.apple.com/macosx/what-is-macosx/ichat.html
9. Pidgin. http://www.pidgin.im |
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