Dose 2016

Water-equivalence of solid phantom materials

A phantom material is water-equivalent for dosimetry when it mimics water in all relevant physical and dosimetric properties in the particular radiation modality

This means, the material should have:

Same attenuation, scatter and absorption properties as that of water

I “see” 10nC in 1min

I “see” exactly the same

H

O

Could there be a material that water- equivalent for the whole range of beam modalities used for radiation therapy?

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