Fig. 2

Acquisition process of 2D DLG distribution map. (a) The EPID detection results of the sliding window gap MLC gap plans with gap of 2 mm to 20 mm. (b) Extrapolation graph to calculate the DLG value of each pixel. (c) 2D DLG distribution map.

Acquisition process of 2D DLG distribution map. (a) The EPID detection results of the sliding window gap MLC gap plans with gap of 2 mm to 20 mm. (b) Extrapolation graph to calculate the DLG value of each pixel. (c) 2D DLG distribution map.