PACS Storage Capacity Calculation
Calculate the PACS storage capacity requirement based on the annual number of examinations, average examination size, and number of years.
Estimated storage requirement
46.875GB
This is a raw capacity estimate; additional capacity should generally be planned for backup, replication, and growth allowance.
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Scientific and theoretical basis
PACS storage capacity is an estimate of the disk space required to store medical images (PACS).
Formula and Logic
Storage (GB) = Annual Examinations × Average Examination Size (MB) × Number of Years / 1024
The volume of images produced annually is multiplied by the retention period and converted from MB to GB (1 GB = 1024 MB).
How to Interpret?
This is a raw estimate. The examination size varies significantly by modality (X-ray can be a few MB, CT/MR can be hundreds of MB); the average size should be chosen realistically.
Considerations
In real planning, additional capacity is required for backup, replication, and growth allowance; most institutions plan significantly above the calculated raw capacity. Legal retention periods should also be taken into account.
Sık Sorulan Sorular
How is the PACS storage requirement calculated?
The raw capacity in GB is found using the formula: Annual examinations × average examination size (MB) × number of years / 1024.
Is the calculated capacity sufficient?
No; additional capacity should be planned for backup, replication, and growth allowance.