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Comparison TSD correction factors for two types of diode detectors measured with the field size of .
| 6‐MV CF | 18‐MV CF | |||
|---|---|---|---|---|
| TSD (cm) | QED | ISORAD | QED | ISORAD |
| 70 | 0.99 | 0.96 | 0.97 | 0.94 |
| 80 | 1.00 | 0.98 | 0.99 | 0.97 |
| 90 | 1.00 | 0.99 | 1.00 | 1.00 |
| 100 | 1.00 | 1.00 | 1.00 | 1.00 |
| 110 | 1.00 | 1.00 | 1.00 | 1.01 |
| 120 | 1.01 | 1.02 | 1.00 | 1.02 |
| 130 | 1.01 | 1.02 | 1.01 | 1.02 |
