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Re: NRC PROPOSES $6,000 FINE
> To estimate the dose to the patient, I recommend reviewing NCRP Report No.
70,
> "Nuclear Medicine - Factors Influencing the Choice and Use of
Radionuclides in
> Diagnosis and Therapy."
If you mean dose FROM the patient, one should not rely on this 1982 NCRP
document. This has been the subject of much recent discussion since the
release of NRC Reg Guide 8.39 in 1997. Besides the Reg Guide, I recommend
the following reading:
Jeffry A. Siegel, Carol S. Marcus, and Richard B. Sparks, Calculating the
Absorbed Dose from Radioactive Patients: The Line-Source Versus Point-Source
Model. J. Nucl. Med. 43: 1241-1244, 2002.
Pat B. Zanzonico, Jeffry A. Siegel, and Jean St. Germain a generalized
algorithm for determining the time of release and the duration of
post-release radiation precautions following radionuclide therapy. Health
Physics 78(6): 648; Dec 2000
Richard B. Sparks, Jeffry A. Siegel, and Richard L. Wahl the need for better
methods to determine release criteria for patients administered radioactive
material. Health Physics 75(4): 385; Dec 1998.
There is other good reading in the J Nucl Med about release criteria for
patients receiving therapy with other compounds. If you really meant dose TO
the patient, presumably the thyroid, one would use a standard MIRD
formulation, but often knowledge of the thyroid mass (or remnant mass) and
effective half-time are not known.
Mike
Michael G. Stabin, PhD, CHP
Assistant Professor of Radiology and Radiological Sciences
Department of Radiology and Radiological Sciences
Vanderbilt University
1161 21st Avenue South
Nashville, TN 37232-2675
Phone (615) 343-0068
Fax (615) 322-3764
Pager (615) 835-5153
e-mail michael.g.stabin@vanderbilt.edu
internet www.doseinfo-radar.com
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