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S-QC program water test tolerances.
| Scanner model | Mean CT# water (HU) | Std dev water (HU) | Unif max diff (HU) |
|---|---|---|---|
| Sensation open | ±4.0 | 9.72–11.88 | ±4.0 |
| Sensation 16 | ±4.0 | 6.35–7.76 | ±4.0 |
| Sensation 64 | ±4.0 | 10.89–13.31 | ±4.0 |
| Emotion 6 | ±4.0 | 10.8–13.2 | ±4.0 |
| Emotion 16 | ±4.0 | 9.27–7.76 | ±4.0 |
Note: Standard deviation of water derived from subtraction image.
