biodex ATOMLAB 950 - To Perform a Bioassay

To Perform A Bioassay
1. Click on <Patient Definition> in the primary tool bar. Select an existing patient, edit an existing
patient, or create a new patient to test. Click on <Close> to return to the Operation screen.
2. Click on <Bioassay>. The Bioassay screen should now be displayed. The selected patient should be
displayed in the Select Name box along with the proper patient I.D. number, a listing showing the
number of bioassays for this person, and the current bioassay number displayed on the screen.
Multiple bioassays can be stored for each patient. Below this is shown the isotope(s), the date
counted, net activity, background, lower limit of detection, and assay results. Activity units and
Trigger Level are displayed at the bottom of the screen.
3. Click on <Select Staff>. The Staff List should now be displayed. This list includes staff members
only. Staff members cannot be counted for any test other than Bioassay. Select the patient by clicking
on the staff member and return to the Bioassay screen.
NOTE: Staff members are entered in the <Patient Definition> window by clicking on the Staff parameter.
4. Click on <Parameters> at the bottom of the Bioassay screen. The Bioassay Preferences screen should
now be displayed. Highlight the isotopes you wish to assay in the Available Isotopes Window. Click
on <Add> to add the selected isotopes to the Isotopes for Assay window (you must add one isotope
at a time.) To remove an isotope from the Isotopes for Assay Window, highlight the desired isotope
and click on <Remove>.
5. Select the Detector and Activity Units.
6. Set the appropriate counting times.
7. Set Geometric Efficiency.
8. Set the Trigger Level.
9. After all parameters are set, click on <OK>. The system returns to the Bioassay screen.
NOTE: If you have not yet performed a background count on this date, you must do so before proceeding with
the bioassay. Click on <Background> to count the background. This will count the gain for all isotopes that
have been turned on for Bioassay. If multiple isotopes use the same gain, the gain will be counted only once.
10. Click on <Assay> at the bottom of the screen. The system will assay the patient for all isotopes
associated with the selected patient.
NOTE: If you click on <Assay> the system will count for the time frame set under Preferences, all the gains
necessary for the isotopes that have been made available for bioassay.
NOTE: The <Count Isotope> option is available for use only if an isotope has been highlighted in the Isotope
Results window. If you click on <Count Isotope>, the system will count, for the time frame set under
Preferences, only the highlighted isotope. This allows the user to count for a longer period of time, ensuring
better accuracy for isotopes with high counts.
11. To print a Bioassay Report, click on the <Report> icon in the primary tool bar. You can then select
from Individual Bioassay Report, Individual Bioassay History Summary, or Employee Bioassay
Summary.
12. If you want to change the contamination trigger level, double-click in the box and enter the new
contamination value.
CONTENTS
BIOASSAY 7-2