Table 1.
Calculated film dose for original and ‘double active layer’ films using single‐ and triple‐channel analysis. Mean film dose calculated using single‐channel dosimetry and triple‐channel dosimetry for original GAFCHROMIC EBT3 film and for delaminated and restacked EBT3 film producing an effective double thickness active layer, for doses in the range 1 to 14 Gy. One standard deviation of the pixel dose values in the regions of interest is shown in brackets
| Film Dose from Original Film | Film Dose from De‐Laminated Film and Restacked with Two Active Layers | |||
|---|---|---|---|---|
| Dose Level (cGy) | Single‐channel Dosimetry (cGy) | Triple‐channel Dosimetry (cGy) | Single‐channel Dosimetry (cGy) | Triple‐channel Dosimetry (cGy) |
| 100 | 100.2 (2) | 100.0 (2) | 246.5 (105) | 91.6 (35) |
| 800 | 785 (11) | 799 (16) | 1681.3 (269) | 866.2 (118) |
| 1200 | 1166 (26) | 1214 (28) | 2452.1 (204) | 1187.5 (223) |
| 1400 | 1401 (22) | 1400 (35) | 2601.4 (390) | 1426.5 (261) |