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TMR from PDD

TMR = 0.7869

TMR(d)=PDD(d)100(SSD+dSSD+dmax)2\mathrm{TMR}(d) = \frac{\mathrm{PDD}(d)}{100}\left(\frac{\mathrm{SSD}+d}{\mathrm{SSD}+d_{\max}}\right)^2

Convert percent depth dose to tissue-maximum ratio.

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