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I've been worrying about this as well. I found out that the maximum millisievert (mSv) you should get occupationally is 100 mSv over 5 years or 20 mSv per year. An abdomen CAT scan is 10 mSv, as opposed to regular chest x-ray which is 0.1 mSv per x-ray. Hence if you're getting two CAT scans a year you are at the max. A mammogram is another 0.7 mSv. One more thing to think about as though we don't have enough.
Best,
Monica
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