Table 2 The nominal dose delivered is 3 Gy.

From: New opto-electro-mechanical sensor for two-dimensions dosimetry based on radiochromic films

PMMA step height (mm)

Measured dose (Gy) in the EBT3 film

Monte Carlo simulation

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dosiMOEMs (position #1)

dosiMOEMs (position #2)

Experimental dose ratio

Simulated dose ratio

1

2.9 ± 0.3

–

2.8 ± 0.3

1.07 ± 0.23

1.04 ± 0.02

2

2.9 ± 0.3

2.7 ± 0.3

2.7 ± 0.3

1.11 ± 0.23

1.09 ± 0.02

3

2.9 ± 0.3

2.6 ± 0.3

2.6 ± 0.3

1.15 ± 0.25

1.13 ± 0.02

4

2.8 ± 0.3

2.5 ± 0.3

2.6 ± 0.3

1.15 ± 0.25

1.17 ± 0.02

5

2.8 ± 0.3

2.5 ± 0.3

2.4 ± 0.3

1.20 ± 0.26

1.21 ± 0.02

10

2.32 ± 0.23

2.1 ± 0.2

–

1.43 ± 0.28

1.42 ± 0.02

  1. The consecutive measured doses in the EBT3 film, which is under the PMMA stairs, is progressively reduced accordingly to the absorbed dose in each PMMA stairs-step. For the experimental dose ratio values were considered the measured dose (Gy) obtained with dosiMOEMs. Note that for experimental and simulation dose ratio values, it was considered as reference the dose without PMMA staircase.
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