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Old 03-04-2011, 03:46 AM
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Default Dialysis Patients Receiving Too Much Radiation


People with kidney disease requiring dialysis are being routinely exposed to large doses of radiation – the equivalent of 1,000 chest X-rays a year on average – new research shows.
This is putting them at high risk of developing cancer, according to the study published in the Journal of the American Society of Nephrology.

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Old 03-04-2011, 05:25 AM
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Doses of radiation vary markedly by body part scanned: A kidney disease patient undergoing a CT scan in the abdominal area will be exposed to more than 30 mSv, while someone with a suspected brain tumour will be exposed to as little as two mSV of radiation when the head is scanned. By comparison, a mammography test exposes a woman to a radiation dose of less than one mSv.
I wonder how many abdominal CT scans a dialysis patient gets in a year. 30mSv per scan is a lot, according to this chart:

Radiation dosage is measured in Sieverts. This replaces the old unit, the Rem. 1 Sievert = 100 Rem, which is a large unit, so we are usually talking millisieverts (mSv) = 1/1000 of a Sievert.

2 to 3 mSv/year - typical background dose in most countries

2.4 mSv/year - average dose to US nuclear industry employees

up to 5 mSv/year - typical dose for aircrew

20 mSv/year - current limit (average) for nuclear industry employees

100 mSv/year - lowest level at which there is evidence of any increase in cancer rate

350 mSv/lifetime - criterion for relocating people after Chernobyl accident

1 Sv/cumulative - Would probably cause a fatal cancer many years later in 5 out of 100 persons

1 Sv single dose in short time - causes radiation sickness such as nausea and decreased white blood cell count, but not death (ie in short term)

5 Sv single dose - Would kill about 50 percent within a month

10 Sv single dose - fatal within a few weeks
Information from https://www.world-nuclear.org/info/inf05.html
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