Effective atomic numbers of biological materials in the energy region 1 to 50 MeV for photons, electrons, and He ions.
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.
Division of Medical Physics, Evanston Hospital, Northwestern University Medical School, Illinois 60201.
K
K
Parthasaradhi
B M
BM
Rao
S G
SG
Prasad
D006801:Humans; D011874:Radiometry; D014894:Weights and Measures