The use of a lung phantom containing 152Eu/241Am activity can provide a sufficient number of energy lines to generate an efficiency calibration for the in vivo measurements of radioactive materials in the lungs. However, due to the number of energy lines associated with 152Eu, coincidence summing occurs and can present a problem when using such a phantom for calibrating lung-counting systems. A Summing Peak Effect Study was conducted at three laboratories to determine the effect of using an efficiency calibration based on a 152Eu/241Am lung phantom. The measurement data at all three laboratories showed the presence of sum peaks. However, two of the three laboratories found only small biases (
Revised: February 27, 2009 |
Published: February 1, 2004
Citation
Kramer G.H., T.P. Lynch, M.A. Lopez, and B. Hauck. 2004.Summing coincidence errors using Eu-152 lungs to calibrate a lung-counting system: are they significant?.Health Physics 86, no. 2:(suppl) S25-S30.PNNL-SA-43495.