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Roentgen-to-dose f-factor

f = 0.9610 rad/R

fmed=0.876(μen/ρ)med(μen/ρ)airf_{\mathrm{med}}=0.876\,\frac{(\mu_{en}/\rho)_{\mathrm{med}}}{(\mu_{en}/\rho)_{\mathrm{air}}}

f_med = 0.876 (μen/ρ)_med / (μen/ρ)_air rad/R. In SI, D = X (W/e) (μen/ρ ratio).

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