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Accuracy (A) and precision (P) for the phantom measurements, stratified on environmental and system conditions, with the number of measurement points (n)
| n | Density | Volume | |||
|---|---|---|---|---|---|
| A [pp] | P [pp] | A [%] | P [%] | ||
| Normal conditions | 50 | 0.6 | 1.1 | 1.8 | 1.2 |
| Temperature variation | 50 | 0.5 | 1.3 | 1.8 | 1.5 |
| High load | 25 | −1.3 | 2.3 | 3.2 | 1.2 |
| Old x‐ray tube | 25 | 0.5 | 1.3 | 1.7 | 1.7 |
| High density | 12 | −0.7 | 3.3 | 0.4 | 1.8 |
| Total | 162 | 0.2 | 1.8 | 1.9 | 1.6 |
