The $key has been calibrated to measure the
activity of Mo-99 in a source contained within the optional
Moly Breakthru Shield. $)")'()'('& (&$)
'!Failure to do so may result in inaccurate results.
The Activity Display will show a direct readout of the activity,
which means that corrections for wall absorption have been
included in the Calibration Value.
Perform the following steps to carry out the Moly
Breakthrough test.
1) Insert empty Moly Shield and press the Mo-99 key. The
Electronic Thumbwheel Display will begin a 30-second
countdown.
2) Once the countdown is finished, verify that the Activity
Display reads 0.05 µCi or less. Wait about 30 seconds
more for the Atomlab 100 to stabilize. If the value is too
high, press the BKGND key. You may continue when the
BKGND LED indicator goes OFF.
3) Place the Tc-99m source in the Moly Shield and carefully
lower it into the Chamber Well.
4) Again press the Mo-99 key. The Electronic Thumbwheel
Display will begin another 30-second countdown.
5) After the count reaches 0, the Activity Display should be
stable enough for an accurate Mo-99 activity reading.
Although the Mo-99 countdown is intended to sug-
gest an adequate time frame, the Atomlab 100 will continue
to acquire Mo-99 data as long as the Mo-99 key is selected.
As a general rule, the longer you wait, the more stable the
reading.
ATOMLAB Dose Calibrator Operation Manual Chapter 5
Biodex Medical Systems 5-5 Release 2.0
Procedure
To Next Page
Loading...
