ICRU 4-element tissue

ICRU 4-element tissue has a density of 1 g cm^(-3), and a mass composition of 76.2% oxygen, 11.1% carbon, 10.1% hydrogen, and 2.6% nitrogen.

(Adapted from ICRP Publication 123, 2013)

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from ICRP Publication 116, 2010

ICRU 4-element tissue has a density of 1 g/cm^3 and a mass composition of 76.2% oxygen, 11.1% carbon, 10.1% hydrogen, and 2.6% nitrogen. The ICRU sphere has this assumed composition.