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This is a good question. There has not
been a compilation of values in this area by the ICRP or other body that I am
aware of, as there is for most occupational exposures to radionuclides. We
tried to get the NRC interested in it several times, but their position was that
the exposures were not significant enough and the occurrences were rare, so it
wasn't needed. But people like yourself certainly do need these values, I
think, when they are trying to assign doses. However, a group in Canada
did a study on this, and they do have some results that I'm sure they would
share. Try making contact with Karin Gordon or M. Billinghurst of the
Health Sciences Centre in Winnipeg, CA. Karin is, interestingly enough, in
Brazil right now. She is coming by our center next Monday and Tuesday
(March 29-30) to give a talk on this subject, so she won't be easy to reach for
another week or so. But her e-mail is KGordon@exchange.hsc.mb.ca
The title of her talk here is "Results of a Canada-wide
In-vivo Bioassay Research Project:Technetium-99m Body Burden in Nuclear Medicine
Workers." If you happen to be in northeast Brazil next Tuesday you
are welcome to drop in! Otherwise, I think you can contact her or Dr.
Billinghurst in Canada and they can help you (sorry I don't have an e-mail
address for him, but perhaps you can find it through an internet
search).
Michael Stabin, PhD Departamento de Energia Nuclear/UFPE Av. Prof. Luiz Freire, 1000 - Cidade Universitaria CEP 50740 - 540 Recife - PE Brazil Phone 55-81-271-8251 or 8252 or 8253 Fax 55-81-271-8250 E-mail stabin@npd.ufpe.br >
>I need advice on which can be a feasible monitoring program of Tc-99m internal contamination of workers in a busy Nuclear Medicine Dept. >Which is your experience? Which the DIL's? > >Thank you in advance. > >Sincerely yours > >Maria Rosa Malisan >Medical/Health physicist >Servizio di Fisica Sanitaria >Azienda Ospedaliera S.Maria della Misericordia >I-33100 Udine >ITALY |