Verification of dosimetric materials to be used as tissue-substitutes in radiological diagnosis

Dosimetric materials have been investigated in terms of calculated mass energy absorption coefficient, equivalent atomic number and KERMA (kinetic energy released per unit mass) in the energy range 0.015–15 MeV. Using analytical methodology it has verified that nylon is the best substitute dosimetric material for skin, muscle, bone and soft-tissues. Relative energy absorption buildup factors calculated by G-P fitting method confirm the findings. Nylon has been found to be good tissue substitute material for making tissue-phantoms of the biological tissues investigated.

► Nylon, a cost effective tissue-substitute material, better than PMMA has found.
► Nylon is approximately 15 times cheaper than PMMA.
► In the intermediate region of the selected range PMMA and Nylon can be used as bone-substitute materials.