Sorry your math adds up to 250 not 833 x-rays. Importantly - each year simple, normal living exposes you to 3.5 mSv (see the same chart), so you only get 1.5 m

Sorry your math adds up to 250 not 833 x-rays. Importantly - each year simple, normal living exposes you to 3.5 mSv (see the same chart), so you only get 1.5 mSv to "allocate" to other exposures. In other words you only get 75 chest x-rays per year. By FAA rates of exposure on trans-pacific flights, you should take max 5-6 of those legs per year.