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The variation of Sc with field size for open and wedged fields in 30 and 60 angles
| Field size (cm2) | Open field (A) | Wedge 30° (B) | Wedge 60° (C) | Percentage deviation | |
|---|---|---|---|---|---|
| (A-B)/A×100 | (A-C)/A×100 | ||||
| 5 | 0.972 | 0.968 | 0.944 | 0.411 | 2.881 |
| 10 | 1 | 1 | 1 | 0 | 0 |
| 15 | 1.013 | 1.017 | 1.040 | −0.395 | −2.664 |
| 20 | 1.021 | 1.028 | 1.072 | −0.686 | −4.994 |
| 25 | 1.026 | 1.035 | 1.094 | −0.876 | −6.628 |
