biodex ATOMLAB 950 - Specific Measurement Modes; Thyroid Uptake Procedures

In this mode, a radioactive uptake study is performed. The system guides the user through a step-by-step
procedure that includes counting the following: standard, lab background, patient thyroid, patient
background, and finally the computation of the uptake percentage. The uptake percentage, which is
calculated from an automatically decay corrected dose count or recounted standard, can then be printed
in a format designed to provide complete information on the patient study.
The system allows multiple data sets for different times for the patient. Once you have created or selected
a patient, you can come back and do an uptake (example: 2 hr, 4 hr, 6 hr or 24 hour.) The system assumes
when you have counted the dose and lab background that you are immediately giving this dose to the
patient.
When the patient comes back at the appropriate time to count thyroid, the system calculates the elapsed
time between when the dose was counted and when the thyroid is being counted. This is listed in tenths
of an hour used for the calculation. With the system performing an automatic decay correction, you do
not need to bring the patient back at exactly six hours. The time could, for example, be 6.2 hours because
the system will calculate for the elapsed time.
Each of the data sets that are counted are displayed in the status window on the Thyroid Uptake screen.
NOTE: If you have not yet calibrated your Atomlab 950 on this day, the system will prompt you to calibrate before
proceeding with the Thyroid Uptake or any other mode selected. High Voltage must also be set before using the
system for the first time. Once the calibration and High Voltage have been performed, you may proceed.
Defining Facility Standard Uptake Procedures
The Procedure Definition option allows the user to define procedures to be used in Thyroid Uptake and
other modes of operation.
To Define A Facility Standard Uptake Procedure
(See Figure 4-1.)
1. Click on <Procedure Definition> in the primary tool bar. The Procedure Definition screen should
now be displayed.
2. Click on <Add> in the screen menu.
3. Enter the procedure name in the Procedure Name box.
4. Select the desired isotope from the Isotope box.
5. Select/define the remaining parameters for this thyroid procedure (i.e., count pre-dose patient
background, procedure type, count type, count time and report options.)
6. Click on <Save> to save the new procedure and return to the Operation screen.
NOTE: To view or modify any preset or existing procedures, click on <Open> in the Procedure Definition screen.
You can then choose a procedure from the procedure list and edit appropriately in standard Windows fashion as
described for the Patient Definition screen.
4. THYROID UPTAKE
4-1 THYROID UPTAKE