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Author: jeffrey cessna
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1. The effect of impurities on calculated activity in the triple-to-double coincidence ratio liquid scintillation method
Published: 3/4/2012
Authors: Denis E Bergeron, Ryan P Fitzgerald, Brian Edward Zimmerman, Jeffrey T Cessna
Abstract: In the triple-to-double coincidence ratio (TDCR) method of liquid scintillation counting, unaccounted or improperly accounted impurities can result in lower-than-expected or higher-than-expected recovered activities, depending on the counting efficie ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909218

2. Development of a traceable calibration methodology for solid Ge-68/Ga-68 sources used as a calibration surrogate for F-18 in radionuclide activity calibrations
Published: 3/31/2010
Authors: Brian Edward Zimmerman, Jeffrey T Cessna
Abstract: We have developed a methodology for calibrating 68Ge radioactivity content in a commercially-available calibration source for dose calibrators in a way that is traceable to the national standard. Additionally, the source was cross-calibrated for equi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902879

3. Development of secondary standards for radium-223
Published: 11/5/2009
Authors: Denis E Bergeron, Brian Edward Zimmerman, Jeffrey T Cessna
Abstract: 223Ra is a bone-seeking alpha emitter, and as such is currently being evaluated as a radiopharmaceutical for the treatment of skeletal metastases. In the clinical setting, dosage measurements are typically achieved with reentrant ionization chambers ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903048

4. Standardization of 68Ge/68Ga using three liquid scintillation counting-based methods
Series: Journal of Research (NIST JRES)
Published: 10/31/2008
Authors: Brian Edward Zimmerman, Jeffrey T Cessna, Ryan P Fitzgerald
Abstract: A solution containing 68Ge in equilibrium with its daughter, 68Ga, has been standardized for the first time at the National Institute of Standards and Technology using 3 liquid scintillation- based techniques: live-timed 4pb-g anticoincidence (LTAC) ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842499

5. A Performance Evaluation of 90Y Dose Calibrator Measurements in Nuclear Pharmacies and Clinics in the United States
Published: 9/1/2008
Authors: M K Schultz, Jeffrey T Cessna, J P Norenberg, T L Anderson, J A Ponto, N Petry, R J Kowalsky, M R Palmer, U F Beinlich, C R Divgi
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101025

6. Assessing the 210At Impurity in the Production of ^u211^At for Radiotherapy by ^u210^At Analysis via Isotope Dilution Alpha Spectrometry
Published: 1/1/2006
Authors: M K Schultz, Michelle M. Hammond, Jeffrey T Cessna, P Plascjak, Brian Edward Zimmerman, B Norman, L Szajek, K Garmestani, Michael P Unterweger
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103325

7. Development of Activity Standard for 90Y Microspheres
Published: 1/1/2005
Authors: L Mo, D Avci, C Baldock, Jeffrey T Cessna, D James, B R Simpson, W M Van wyngaardt
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103259

8. Establishment of Transfer Standard for Holmium-166-DOTMP
Published: 1/1/2005
Authors: Jeffrey T Cessna, D B Golas, Michael P Unterweger, Brian Edward Zimmerman
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103020

9. Applied Experimental Determination of Calibration Settings for Plastic Syringes Containing Solutions of Y-90 using Commercial Radionuclide Calibrators
Published: 1/1/2004
Authors: Brian Edward Zimmerman, Jeffrey T Cessna, M Millican
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103675

10. Construction and Implementation of the NIST Triple-to-Double Coincidence Ratio (TDCR) Spectrometer
Published: 1/1/2004
Authors: Brian Edward Zimmerman, Jeffrey T Cessna, R Coll{eacute}
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103409