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Figure 5: (a) A model of breathing pattern (curved blue line) with assumption, the beam was on at wrong position in second breathing cycle (beam on area in yellow part) and black lines determine the phase window. (b) Predicted amplitude window with the same breathing pattern. (c) Beam-on time error with phase-based treatment in red area. (d) Beam-on higher and lower displacement error with amplitude-based treatment in brown and blue area, respectively

Figure 5: (a) A model of breathing pattern (curved blue line) with assumption, the beam was on at wrong position in second breathing cycle (beam on area in yellow part) and black lines determine the phase window. (b) Predicted amplitude window with the same breathing pattern. (c) Beam-on time error with phase-based treatment in red area. (d) Beam-on higher and lower displacement error with amplitude-based treatment in brown and blue area, respectively