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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Med Phys. 2019 Apr 1;46(5):2251–2263. doi: 10.1002/mp.13493

Figure 1.

Figure 1.

Z-to-I conversions proposed by Yang (Y), Saito (S), and Bourque (B). All three methods were fitted using the ICRU 44 reference human tissues. Magenta asterisks indicate soft tissues and green asterisks indicate bone tissues.