highly significantp < 0.0001
CT exposure resulted in a highly significant ( p < 0.0001) increase of FPC in all four individuals with an average DSB foci number of 0.66 ± 0.08 for PCCT and 0.56 ± 0.067 for conventional CT (Fig. 2 ), in addition to a significant difference among both CT techniques ( p < 0.004).