FIG. 2.

Procedure for generating, measuring and comparing fluence maps. The treatment planning system calculates the dose distribution in the patient's body (a). Then it is converted maintaining all the parameters of the beams into a verification plan and reference fluence maps are generated. (b). Fluence maps are measured using the EPID matrix (c). In the next step, the calculated fluence map (b) is compared with the measured one (c). If gamma is smaller than 1 in 98% analyzed points, comparisons: calculated vs. measured fluence maps — pass.