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. 2020 Feb;20(1):131–139. doi: 10.17305/bjbms.2018.3185

FIGURE 3.

FIGURE 3

Measurement of absolute dose fall-of distance. The double-ended red arrows indicate the range of measurements. The red point denotes the Dmax. The blue arrows denote the direction 1, 2, 3 and 4. Dmax Maximum dose.