This study was conducted on the technicians in the radiology department at Kasr El-Aini hospital. They are occupationally exposed to low level of ionizing radiation, 36 workers from different departments of Kasr El-Aini hospital were chosen as control group. The environmental measurements in the radiology department were below the permissible limits of Egypt 50 Sv/ year. The most significant result was high frequency of chromosomal aberrations in the exposed group. There was significant reduction in chromosomal aberrations after intake of vitamin E 1g/day/ 50/days or vitamin C 2g/day/50days. There was no significant reduction in chromosomal aberrations after intake of both (Vit E 1g/day and Vit. C 2g/day) for 50 days.