Cluster Computing and the Grid, IEEE International Symposium on (2008)
May 19, 2008 to May 22, 2008
Medical grid networks typically deal with extremely sensitive information and therefore require a special diligence in terms of security and reliability. This holds especially true in Medical Imaging, which is why the medical community long established DICOM (Digital Imaging and Communicationin Medicine), a world-wide imaging and communication standard for secure and reliable data interchange. Most healthgrid projects today use DICOM witha combination of GridFTP and the Reliable-File-Transfer(RFT) web service. Due to the multiple protocols and services involved, this solution is not ideally suited in termsof reliability or fault-tolerance. The proposed solution in this paper replaces the GridFTP combination by an end-to-end Grid-enhanced DICOM implementation and models the GridDICOM transfers as complex, Petri-Nets-based workflows. Based on these workflows, a respective workflow engine can autonomously and reliably control transfers including complex fault recovery and optimized routing strategies. A first prototype of the service, the components,and the respective workflows have been developed and successfully tested in MediGRID, the German grid network forlife-sciences.
Grid-Computing, Image Communication, DICOM, Workflow, Fault-Tolerance
D. Krefting, A. Hoheisel, T. Tolxdorff and M. Vossberg, "A Reliable DICOM Transfer Grid Service Based on Petri Net Workflows," 2008 8th International Symposium on Cluster Computing and the Grid (CCGRID '08)(CCGRID), Lyon, 2008, pp. 441-448.