A-6 APPENDIX A Biodex Medical Systems, Inc. © 2014
Figure A.3. The Measure Efficiency screen with the isotope efficiency shown.
NOTE: Total efficiency for an isotope is the (isotope efficiency) x (the geometric efficiency). This
procedure allows the user to create one standard for an isotope. If you change the geometry,
you do not have to create a new standard.
NOTE: The A960 system will automatically record and calculate for you.
NOTE: You must create a new isotope if you want the probe and well to have different ROI’s.
Several isotopes in the list are shown with a different ROI for the well.
13. If you wish to manually calculate the efficiency, record the counts in the ROI as (S). (Proceed
with step 10 for Manual Calculation.)
14. Select <Accept> and the system will automatically calculate and display the isotope
detector efficiency.
NOTE: Total efficiency is a combination of the geometric and detector efficiencies.
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