[jwalsh07]

To put things in perspective a chest xray dose is about 1/2 Gray.

[SC DOC]

"To put things in perspective a chest xray dose is about 1/2 Gray."

Sorry to be picky, but the dose of radiation from a chest x-ray is 0.25 millirad which means 4000 chest x-rays=1 rad (cGy). 100 cGy=1Gy.

5 MegaGy (5 million Gy) necessary for anthrax spore kill is equivalent to 20,000,000,000 (20 billion) chest x-rays!