K. Parthasaradhi1, B. Mallikarjuna Rao1, S. Guru Prasad1
1Division of Medical Physics, Evanston Hospital, Northwestern University Medical School, Evanston, Illinois 60201
Tóm tắt
A study of effective atomic numbers for biological materials such as, bone, muscle, spleen, liver, mucin, and water has been carried out in the energy region 1 to 50 MeV for photons, electrons, and He ions. It is noticed that the effective atomic number for photons and electrons increases with energy, and remains, more or less the same, for He ions.
