DoseRate & Sterility (IMAGE)
Caption
Dependence of the bactericidal effect of a constant irradiation dose of 200 Gy (X-ray energy: 220 keV) on the X-ray dose rate in a nutrient-deprived environment for Escherichia coli.
(a) At a dose rate of 147 mGy/s for 1,360 seconds, a 99.5% bactericidal rate was observed, with the number of E. coli reduced from 36,000 to 180.
(b) At a lower dose rate of 15.3 mGy/s for 13,070 seconds, a 99.98% bactericidal rate was achieved, with the bacterial count decreasing from 36,000 to just 8.
Credit
© Nagoya City University
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
License
CC BY-NC-ND