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. 2010 Apr 19;11(2):140–157. doi: 10.1120/jacmp.v11i2.3185

Figure 3.

Figure 3

In the third step, the pixel values in the EPID image are convolved with a redistribution kernel. This creates a water equivalent electron dose distribution (for the modeled QA plane depth, in phantom). Redistribution is very dependent on beam energy and the simulated QA depth‐in‐phantom, and to a certain extent on the EPID image acquisition and processing employed by the user.