Search Results - "Zimmerman, B.E."

Long-term stability of carrier-added 68Ge standardized solutions by Zimmerman, B.E., Bergeron, D.E., Fitzgerald, R., Cessna, J.T.

“…Tests for chemical stability were carried out on carrier-added 68Ge solutions prepared and calibrated in 2007 and 2011 to evaluate the suitability of the…”
Get full text

Standardization of radium-223 by liquid scintillation counting by Cessna, J.T., Zimmerman, B.E.

“…Liquid scintillation (LS) counting was undertaken as part of the primary standardization of 223Ra. Radium-223 decays with a half life of 11.43 d through a…”
Get full text

Development of a calibration methodology for large-volume, solid 68Ge phantoms for traceable measurements in positron emission tomography by Zimmerman, B.E., Pibida, L., King, L.E., Bergeron, D.E., Cessna, J.T., Mille, M.M.

“…We have developed a methodology to calibrate the 68Ge activity concentration in large (9L) cylindrical epoxy phantoms in a way that is traceable to national…”
Get full text

A new evaluation of the decay data for 166Ho by Zimmerman, B.E.

“…The β−-emitter 166Ho is of interest as a potential radiolabel for therapeutic medical applications. A new decay data evaluation for 166Ho has been performed…”
Get full text

Decay data for the positron emission tomography imaging radionuclide 124I: A DDEP evaluation by Zimmerman, B.E.

“…A new decay data evaluation for the positron emitting radionuclide 124I has been performed using the Decay Data Evaluation Project (DDEP) methodology. New…”
Get full text

Decay data for the positron emission tomography imaging radionuclide 124 I: A DDEP evaluation by Zimmerman, B E

“…A new decay data evaluation for the positron emitting radionuclide I has been performed using the Decay Data Evaluation Project (DDEP) methodology. New…”
Get full text

(Mis)use of 133 Ba as a calibration surrogate for 131 I in clinical activity calibrators by Zimmerman, B.E., Bergeron, D.E.

Get full text

Absolute emission intensities of the gamma rays from the decay of 224Ra and 212Pb progenies and the half-life of the 212 Pb decay by Pibida, L., Bergeron, D.E., Collins, S.M., Ivanov, P., Cessna, J.T., Fitzgerald, R.P., Mewburn-Crook, J., Zimmerman, B.E., King, L.

“…Absolute gamma-ray emission intensities for 36 characteristic gamma rays from the decay of 224Ra, 212Pb, and their progeny were determined by measuring sources…”
Get full text

Long-term stability of carrier-added 68 Ge standardized solutions by Zimmerman, B.E., Bergeron, D.E., Fitzgerald, R., Cessna, J.T.

Get full text

(Mis)use of 133Ba as a calibration surrogate for 131I in clinical activity calibrators by Zimmerman, B.E., Bergeron, D.E.

“…Using NIST-calibrated solutions of 131Ba and 131I in the 5mL NIST ampoule geometry, measurements were made in three NIST-maintained Capintec activity…”
Get full text

Current status and future needs for standards of radionuclides used in positron emission tomography by Zimmerman, B.E.

“…Positron Emission Tomography (PET) is being increasingly used as a quantitative technique for detecting disease and monitoring patient progress during…”
Get full text

Standardization of I-124 by three liquid scintillation-based methods by Bergeron, D.E., Cessna, J.T., Fitzgerald, R., Pibida, L., Zimmerman, B.E.

“…A solution of 124I was standardized for activity by 4πβ(LS)-γ(NaI) live-timed anticoincidence (LTAC) counting, with confirmatory measurements by…”
Get full text

63Ni half-life: a new experimental determination and critical review by Collé, R., Zimmerman, B.E.

“…The 63Ni half-life has been determined to be 101.06 ± 1.97 a based on three independent measurements, conducted over the past 27 years, of the massic activity…”
Get full text

Determination of the internal pair production branching ratio of 90Y by Pibida, L., Zimmerman, B.E., King, L., Fitzgerald, R., Bergeron, D.E., Napoli, E., Cessna, J.T.

“…The National Institute of Standards and Technology (NIST) measured the internal pair production branching ratio of 90Y using two sources and four high purity…”
Get full text

Standardization of 64Cu activity by Bergeron, D.E., Cessna, J.T., Fitzgerald, R., Pibida, L., Zimmerman, B.E.

“…The complex decay scheme that makes 64Cu promising as both an imaging and therapeutic agent in medicine also makes the absolute measurement of its activity…”
Get full text

Assessing the absolute quantitative accuracy of Positron Emission Tomography for Cu-64 using traceable calibrated phantoms by Zimmerman, B.E., Bergeron, D.E., Edgerton, J.P.

“…Using uniform cylindrical phantoms containing calibrated solutions of 18F and 64Cu, we evaluated for the first time the accuracy with which the activity…”
Get full text

Radioassays and experimental evaluation of dose calibrator settings for 18F by Zimmerman, B.E., Kubicek, G.J., Cessna, J.T., Plascjak, P.S., Eckelman, W.C.

“…The positron emitter 18F continues to be one of the most important imaging radionuclides in diagnostic nuclear medicine. Assays of radiopharmaceuticals…”
Get full text

Revision of the NIST Standard for (223)Ra: New Measurements and Review of 2008 Data by Zimmerman, B E, Bergeron, D E, Cessna, J T, Fitzgerald, R, Pibida, L

“…After discovering a discrepancy in the transfer standard currently being disseminated by the National Institute of Standards and Technology (NIST), we have…”
Get full text

Results of an international comparison of 57Co by Zimmerman, B.E., Palm, S.

“…As part of a Cooperative Research Project (CRP) aimed at improving the state of radioactivity measurement in nuclear medicine, the International Atomic Energy…”
Get full text

Results of an international comparison of activity measurements of 68Ge by Cessna, J.T., Fitzgerald, R., Zimmerman, B.E., Laureano-Pérez, L., Bergeron, D.E., van Wyngaardt, F., Smith, M., Jackson, T., Howe, B., da Silva, C.J., Iwahara, A., da Cruz, P.A.L., Zhang, M., Liu, H., Liang, J., Fréchou, C., Bobin, C., Cassette, P., Kossert, K., Nähle, O., Marganiec-Gałązka, J., Joseph, L., Ravindra, A., Kulkarni, D.N., Yunoki, A., Sato, Y., Lee, K.B., Lee, J.M., Agung, Dziel, T., Listkowska, A., Tymiński, Z., Sahagia, M., Antohe, A., Ioan, M.-R., Luca, A., Krivosek, M., Ometakova, J., Javornik, A., Zalesakova, M., García-Toraño Martinez, E., Roteta, M., Mejuto, M., Nedjadi, Y., Juget, F., Yuan, M.-C., Yeh, C.Y., Yeltepe, E., Dirican, A., Keightley, J., Pearce, A.

“…An international key comparison, identifier CCRI(II)-K2.Ge-68, has been performed. The National Institute of Standards and Technology (NIST) served as the…”
Get full text