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Home > Archive > Radiology interventional > August 2005 > cobalt-therapy machine for item-sterilization?
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cobalt-therapy machine for item-sterilization?
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| phlegmatico@yahoo.com 2005-08-18, 8:58 am |
| if I can talk them into it (money talks), would the local
cancer-therapy center's Cobalt machine be able to put 89 kiloGray into
my few-ounces occasional item? How long would it take?
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| Imabug 2005-08-19, 11:51 am |
| This questions is best answered by the physicist who does the
calibrations and checks on the machine. They will know the output of
the machine and how long it will take to provide the desired dose.
About the best answer you will get here is a general time range.
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| Ray Laughton 2005-08-19, 5:59 pm |
| <phlegmatico@yahoo.com> wrote:
> if I can talk them into it (money talks), would the local
> cancer-therapy center's Cobalt machine be able to put 89 kiloGray into
> my few-ounces occasional item? How long would it take?
Money talks, but not in this case.. The radiation would take much longer
than if its done by industrial radiation. Sterilizing objects requires
much higher doses than killing cancer cells, (89000 Gy vs 2Gy/day) so
the industry has very large cobalt sources. If normal radiation requires
a ballpark figure (depends on how fresh the source is) of lets say 2
minutes, do the maths: you'd block their cobalt for 2months! Even if
2Gy take 1 minute/patient thats still a month of rads..
What is it you want to sterilize? Herbs/spices?
ray
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