Figure 3From: Role of in vivo dosimetry with radiochromic films for dose verification during cutaneous radiation therapy Relative dose fall-off with standoff using a 10 × 10 cm 2 closed-ended applicator measured with EBT3 film placed on a solid water phantom and compared to the expected fall-off based on the inverse square law. The BSF was factored out of the film measurements for direct comparison with the in air ion chamber measurements and the expected fall-off. Excellent agreement is demonstrated between ion chamber and film.Back to article page