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Medical ImagingGenerated accuracy model review: 2026-05-06

Study Count to Storage Calculator accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

  • Raw TB = study count * average study GB / 1024. Usable TB = raw TB / compression ratio. Billable TB = usable TB * redundancy multiplier * overhead factor.

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

  • DICOM Modality Preset: CT typical planning - 0.45 GB/study, 2:1
  • Study Count: 100,000
  • Average Study Size: 0.45 GB
  • Compression Ratio: 2 :1
  • Redundancy Multiplier: 1.2 x
  • Operational Overhead: 10%

Expected outputs

  • Billable Storage: 2.32 TB
  • Usable Image Storage: 1.76 TB
  • Raw Study Storage: 3.52 TB
  • Average Stored Study: 0.23 GB

Known limitations

  • This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
  • Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

  • Average study size is representative.
  • Compression and redundancy are modeled as simple multipliers.
  • No study data is stored.

Unit handling

  • DICOM Modality Preset accepts one of the configured options.
  • Study Count accepts numeric values.
  • Average Study Size accepts values in GB.
  • Compression Ratio accepts values in :1.
  • Redundancy Multiplier accepts values in x.
  • Operational Overhead accepts values in %.
  • Billable Storage is displayed in TB.
  • Usable Image Storage is displayed in TB.
  • Raw Study Storage is displayed in TB.
  • Average Stored Study is displayed in GB.

Rounding rules

  • Number displays use up to 2 decimal places in the calculator UI.
  • Input precision follows configured step values where provided.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current study-count-to-storage-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Study Count to Storage Calculator.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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