Experiments of DICOM over ATM in LAN and WAN networks

Giovanni Venturi; Claudio Uras; Gabriella Cabitza

doi:10.1117/12.274609

22 May 1997 Experiments of DICOM over ATM in LAN and WAN networks

Giovanni Venturi, Claudio Uras, Gabriella Cabitza

Proceedings Volume 3035, Medical Imaging 1997: PACS Design and Evaluation: Engineering and Clinical Issues; (1997) https://doi.org/10.1117/12.274609
Event: Medical Imaging 1997, 1997, Newport Beach, CA, United States

Abstract

Communication data systems play a central role in medical imaging. Both PACS internal image networks and teleradiology systems need a very large bandwidth to operate. Until recently, industrial standardized protocols have proved to be inadequate to meet the requirements of image transfer at a speed compatible with patient-care needs. PACS vendors, especially when using a shared memory architecture, have developed and inserted proprietary protocols in their systems, causing the well known drawbacks of not standardized environments. Recent technological advances provide potential solutions to these constraints. ATM, above all, provides the aggregate bandwidth and throughput that may be satisfactory to the medical imaging community. At the moment there are no references of working PACS using ATM but several experiments have been reported. This work reports the experience acquired using ATM as a backbone for a distributed medical imaging system under development at CRS4. The attention is focused, in particular, on the performance of DICOM over ATM. It is well know that the transmission subset of DICOM typically uses TCP/IP protocols. A protocol stack is created for running over ATM, where each layer segments and reassembles data according to its rules. This configuration has the great advantage of allowing ATM communication without any change in the DICOM protocol. Moreover it allows the optimization of different networks segments, using different low level protocols, within a single DICOM environment. As a drawback, an overload of protocol data is introduced, lowering the throughput to values far below the nominal ones.

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Giovanni Venturi, Claudio Uras, and Gabriella Cabitza "Experiments of DICOM over ATM in LAN and WAN networks", Proc. SPIE 3035, Medical Imaging 1997: PACS Design and Evaluation: Engineering and Clinical Issues, (22 May 1997); https://doi.org/10.1117/12.274609

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KEYWORDS

Local area networks

Asynchronous transfer mode

Switches

Image storage

Interfaces

Medical imaging

Radiology

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