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AAPM TG18 acceptance criteria
| Parameter | Primary display | Secondary display |
|---|---|---|
| Minimum luminance, Lmin | 170 cd/m2 | 100 cd/m2 |
| Contrast ratio (maximum/minimum luminance) | >250 | >100 |
| Reflection luminance ratio (minimum luminance/ambient luminance) | <4 | <1 |
| Luminance variation | <30% | <30% |
| SMPTE Resolution Pattern Resolution | All lines clear | All lines clear |
| No diagonals | No diagonals | |
| Contrast Balance | 5% and 95% levels clearly seen | 5% and 95% levels clearly seen |
