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RE: Article: How I set off the subway radiation meter
Bill,
If you look at Reg Guide 8.39, which gives guidance on release criteria for
patients. A patient may be released if they have received 760 mCi of Tc-99m
(Yes, the number is 760) The corresponding dose rate is 58 mrem/hr at one
meter. Instructions on precautions are required if the patient received
over 150 mCi of Tc-99m and is being released. Since most nuclear medicine
scans are around 5 to 25 mCi of Tc-99m, patients are never help for "decay."
As you say, and I agree with:
It's not about dose, it's about trust.
Let's look at the real problem, for a change.
-- John
John Jacobus, MS
Certified Health Physicist
3050 Traymore Lane
Bowie, MD 20715-2024
E-mail: jenday1@email.msn.com (H)
-----Original Message-----
From: William V Lipton [mailto:liptonw@dteenergy.com]
Sent: Friday, February 01, 2002 8:03 AM
To: Jacobus, John (OD/ORS)
Cc: RadSafe
Subject: Re: Article: How I set off the subway radiation meter
Presently 10 CFR 35.75(b) requires written instructions to released nuc med
patients only if the expected dose is likely to exceed 0.1 rem. I assume
that this patient was under the regulatory threshold.
IMHO, this requirement should apply to ALL nuc med patients, due to the
situation described, here.
. . .
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