biodex ATOMLAB 500, Operation And Service Manual, Page: 112 / 212

NOTE: The user must perform a traditional linearity test at the time the initial Lineator
Test is performed to prove the calibration is linear. If the initial Lineator Test is performed
before the traditional test, the user can perform both tests with one source.
To Perform An Initial Lineator Test:
1. From the QA Dose Calibrator menu, touch <Linearity Testing>. The Linearity
Testing screen is displayed.
2.
Touch <Lineator Initial Test>. The Lineator Initial Test screen is displayed.
•
Touch <Back> to return to the Linearity Testing screen.
•
Touch <Select Max Activity Level> to toggle between maximum activities of less than
55
m Ci and greater than 55 m Ci.
NOTE: The system defaults to less than 55 mCi. If the test starts with an activity greater
than 55 mCi, the user must select this range. Some states allow linearity to stop at values
greater than 10 µCi.
Figure 6.64. Lineator Initial Test – Select MAX Activity Level Button Options.
•
Touch <Zero Background> to zero the background reading if necessary.
3.
Place the Tc-99m vial into the Lineator Tube 1. Place Tube 1 into the detector. The
activity for Tube 1 is now displayed as a live reading.
4.
Once the reading has stabilized, touch <Record Reading>. The reading for Tube 1 is
recorded and the line for Tube 1 & 2 is now displayed as a live reading.
Figure 6.65. Lineator Initial Test – Record Reading Touched.