Capintec CAPRAC-t - Page 160

CAPINTEC, INC. CAPRAC
®
-t
April 2021 TESTS 9-21
Figure 9-16 MDA Test Results Screen
The MDA Test value is calculated from the following equation:
( )
( )
T
Eff
CN
f
×
+
=
MDA
Where,
f = Precision Factor
N = the sum of the total background counts in all relevant channels (ROI) for
the selected nuclide multiplied by the counting time (in minutes for Curies; in
seconds for Becquerels)
C = Correction Factor
Eff = Efficiency
T = Counting Time (in minutes for Curies; in seconds for Becquerels)
If a printer is attached to the system, the test results can be printed by touching the
PRINT button.
To view the spectrum of the MDA Background measurement, touch the SPECTRUM
button.
To print the spectrum, touch the PRINT button on the spectrum screen.