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The teleradiology system KAMEDIN (German Telekom), installed on HP- Unix- and NT-Workstations, was evaluated in different scenarios and a cost-benefit- analysis was performed. CT examinations were transfered from a PACS workstation (GE) to KAMEDIN using DICOM-3 protocol. Teleconferences were realized with an intensive care unit by LAN, with a radiology department at 5 km. distance by ISDN, and with an on- duty radiologist 22 km. away by ISDN. On average, 36 CT slices per patient were transfered. Overall costs (costs for hardware, software, support, ISDN-fees, and staff) were compared to possible cost reduction, mainly concerning transportation and films.
These three scenarios could be realized during daily routine work. Differing in their amount of transportation cost reduction, two applications (intensive care unit, radiologist on duty) showed a break-even at 1817, respectively 528 teleconferences/year, improvement of cost-effectiveness can be obtained on the conditions that existing hardware will be used and that the automatic data transfer will be improved. Combining all optimisation factors, the break-even decreased to a minimum of 167, respectively 77 teleconferences/year. The optimisation of patient management is an additional– but in this study, not yet counted– advantage of teleradiology.
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