Comparison of heavy charged particles and x-rays for axial tomograpic scanning

Heavy charged particles are applicable to the problem of 3- dimensional reconstruction of electron density distributions of biological samples. The transverse uncertainty in the path of a heavy charged particle due to multiple scattering can be reduced by measuring the entrance and exit positions and angles of the particle. Patient doses for He ions and 80 keV x rays are compared under conditions suitable for imaging the human head. (auth