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Radiological image data migration. Practical experience and comparison of the costs of work
M Maass1, M Kosonen, M Kormano
1Department of Diagnostic Radiology, University of Turku and Turku University Central Hospital, Turku, Finland.
Acta Radiologica (Stockholm, Sweden : 1987)
|July 10, 2001
Summary
Data migration from obsolete digital archives is labor-intensive and prone to errors, especially with older systems like MOD. Automating this process is recommended for efficiency and cost-effectiveness in medical imaging centers.
Area of Science:
- Medical Imaging Informatics
- Digital Archiving
- Data Management
Background:
- Digital archives face capacity limitations and technological obsolescence.
- Medical Imaging Centres require robust and scalable data storage solutions.
Purpose of the Study:
- To quantify the costs and workload associated with migrating data from obsolete digital archives.
- To identify and analyze problems encountered during data migration.
Main Methods:
- Data migration from two digital archives (DLT and MOD) to a new 17 TB tape archive.
- Measurement of work processes through self-reporting and calculation of associated costs.
- Analysis of transfer success rates and cost comparison between different migration paths.
Main Results:
- Transferring 43,096 studies took 314 working hours over 15 months.
- The MOD archive experienced a 35% non-retrievable image rate; DLT had <0.2% failure.
- Migrating data from MOD to DLT was six times more expensive per study than DLT to DLT.
Conclusions:
- Data migration is an increasing necessity due to data growth and technological advancement.
- The MOD archive data transfer was labor-intensive and highly sensitive to faults.
- Automated data migration is recommended to mitigate risks and improve efficiency.