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Figure 2: Efficiency of various ion chamber dose calculations using EGSnrc Monte Carlo user codes as a function of several variance reduction technique factors; (a) NRC 3C ion chamber (b) Parallel-plate pancake chamber (c) NE2571 Farmer-type ion chamber (d) N30013 Farmer-type ion chamber

Figure 2: Efficiency of various ion chamber dose calculations using EGSnrc Monte Carlo user codes as a function of several variance reduction technique factors; (a) NRC 3C ion chamber (b) Parallel-plate pancake chamber (c) NE2571 Farmer-type ion chamber (d) N30013 Farmer-type ion chamber