Annexure 1.
Calculation sheet for obtaining overall surface dose measured with EBT3 film across scar during the full course of conventional fractionation according to formula (1) in a patient belonging to Group A with randomization number A14
| Parameter | Measured surface dose with bolus | Measured surface dose without bolus | |||||
|---|---|---|---|---|---|---|---|
|
|
|
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| 1st | 2nd | 3rd | 1st | 2nd | 3rd | ||
| Film position | a1 | 93.0 | 94.8 | 92.8 | 48.8 | 44.6 | 48.6 |
| a2 | 92.7 | 87.8 | 95.8 | 57.6 | 45.7 | 49.0 | |
| a3 | 98.0 | 92.1 | 91.0 | 60.1 | 50.6 | 53.8 | |
| a4 | 92.8 | 94.8 | 94.9 | 61.1 | 50.7 | 53.3 | |
| a5 | 92.8 | 94.6 | 95.8 | 63.9 | 56.7 | 58.3 | |
| a6 | 94.2 | 92.0 | 94.6 | 63.3 | 55.9 | 58.1 | |
| Calculation parameters | Mean = 
|
93.9 (b1) | 92.7 (b2) | 94.1 (b3) | 59.1 (c1) | 50.7 (c2) | 53.5 (c3) |
| Overall mean surface dose (%) from all measurements | b =  = 93.6 |
c =  = 54.4 |
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| Number of fractions | P=15 | q=10 | |||||
| Total surface dose (Gy) =r | r = p × 2.0×b = 15×2.0×0.936=28.08 | s = q × 2.0×c = 10×2.0×0.544=10.88 | |||||
| OSD (Gy) “t”=sum of total surface dose obtained with and without bolus=r + s | t = r + s=28.08+10.88=38.96 | ||||||
| OSD (%)= |
 ˣ100 = 77.92 |
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OSD: Overall surface dose