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Phantom Scatter correction factors (Sp) for rectangular fields
| Long field size (X/Y)(cm) | Phantom scatter correction factors SP (X,Y) | |
|---|---|---|
| X= 5 cm | Y= 5 cm | |
| 5 | 1.167 | 1.167 |
| 6 | 1.194 | 1.181 |
| 8 | 1.222 | 1.205 |
| 10 | 1.233 | 1.219 |
| 15 | 1.257 | 1.243 |
| 20 | 1.270 | 1.257 |
| 25 | 1.280 | 1.267 |
| 30 | 1.280 | 1.267 |
| 35 | 1.280 | 1.267 |
