Radiant energy – Calibration or standardization methods
Reexamination Certificate
2009-03-09
2010-11-02
Porta, David P (Department: 2884)
Radiant energy
Calibration or standardization methods
Reexamination Certificate
active
07825372
ABSTRACT:
A method for calibration and a calibrator source standard calibrated by the method are provided. The calibration method includes providing mock syringes, or other simulated dose container. A first of the mock syringes is filled with a short half life positron emitter. A second of the mock syringes is filled with a longer half life radionuclide set in a matrix material such as an epoxy. The activities of the two syringes can be determined, ideally in the same ion chamber, for example, against a radioactive source standard having a half life greater than the first and second radionuclides. This allows a conversion factor to be determined which can be used for a calibrator source standard formed as for the second mock syringe (i.e., with the same type of container containing the longer half life radionuclide set in a matrix material), when the calibrator source standard is used as a proxy for calibrating a calibrator for use in determining the activity of a dose container of the same configuration containing a dose of the short lived radionuclide.
REFERENCES:
patent: 4333010 (1982-06-01), Miller
patent: 4401108 (1983-08-01), Galkin et al.
patent: 4430258 (1984-02-01), McFarland et al.
patent: 4506155 (1985-03-01), Suzuki et al.
patent: 4771177 (1988-09-01), Brown
patent: 6251059 (2001-06-01), Apple et al.
patent: 2002/0156338 (2002-10-01), Menuhr
patent: 2004/0260143 (2004-12-01), Reilly et al.
patent: 2005/0029465 (2005-02-01), Lemer
patent: 2005/0047114 (2005-03-01), Harrell et al.
patent: 2005/0107698 (2005-05-01), Powers et al.
patent: 1416297 (2004-06-01), None
U.S. Appl. No. 60/791,161, filed Apr. 11, 2006, Allberg.
Atomlab 100 Plus Dose Calibrator, http://www.biodex.com/radio/dosecal/dose—265feat.htm., downloaded Jun. 21, 2006, copyright 2003.
Auriga Medical—The New Name in Nuclear Medicine, http://www.aurigamedical.com/auto/calibration.asp., downloaded Jun. 20, 2006.
Cessna, et al.,A Comparison of the CIEMAT/NIST Efficiency Tracing Method and the Triple-to-Double-Coincidence Ratio Method in the Measurement of Germanium-68, LSC, May 2008.
New Dose Calibrator Standard for Fluorine-18 F-18, Biotech Business Week, Oct. 6, 2008, http://goliath.ecnext.com/coms2/., downloaded Feb. 24, 2009.
NIST Tech Beat, Jan. 8, 2008, http://www.nist.gov/public—affairs/techbeat/tb1002—0108.htm., downloaded Feb. 24, 2009.
O'Farrell, et al.,Accuracy of the F-18 Calibration Setting with a Capintec Dose Calibrator, J. Nucl. Med., 29(Supplement 1):435P (2008).
Fay Sharpe LLP
Porta David P
RadQual, LLC
Taningco Marcus H
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