CAPINTEC, INC. CRC
®
-25R
Note: The activity will be tested to see if it's too high the same way that Mo99 Background
is tested.
Tc99m Assay
The Tc99m Assay is performed next.
1.232 Ci
ENTER to Accept
Figure 10-17 Moly Assay Tc99m Measurement
Press ENTER to accept the measurement.
Moly Assay Results
If the measured Tc99m activity is below 1.0 mCi, the error message “ACTIVITY TOO LOW –
ANY KEY TO CONTINUE” will appear. Press any key (except HOME) to continue. The Tests
Menu will re-appear.
The Mo99/Tc99m ratio is calculated and displayed.
The ratio is compared to the allowable value (which can be changed in Moly Setup –
Reference CHAPTER 6: CHAMBER INITIALIZATION, SECTION: MOLY ASSAY SETUP)
and the time when the ratio will exceed this limit is calculated.
If the calculated time limit is less than 12 hours, a usage message is displayed depending
upon the useable time for the elution. An example of such a case is Figure 10-18
Mo99/Tc99m Exceeds Limits Screen.
0.058 µCi/mCi
DO NOT USE AFTER
9 HOURS
Acknowledge by ID:
Figure 10-18 Mo99/Tc99m Exceeds Limits Screen
10 - 14 MEASUREMENT PROCEDURES March 15
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