GLOSSARY
OVERVIEW
This glossary provides definitions for the most common
terms relevant to the Atomlab Dose Calibrators.
The test of a dose calibrator to see how close the displayed
activity values are to the true values.
The time the Atomlab takes to display a stable activity
reading.
The function of the Atomlab, initiated by pressing the BKGND
key, which stores a value for the ambient activity. This value
is automatically subtracted from all subsequent activity meas-
urements to compensate for the background activity level.
The international unit of activity, corresponding to one dps
(disintegration per second, or one nucleus decaying per
second). The Atomlab displays activity values in units of
MBq (million Bq) or GBq (billion Bq).
The use of calibrated activity sources traceable to the
National Institute of Standards & Technology to calibrate
each Atomlab unit and verify the accuracy of the activity val-
ues it displays.
The value set on the Electronic Thumbwheel (#1) Display to
adjust the Atomlab to correctly respond to a particular
radioisotope. See Response, Ionization Chamber.
A sleeve shield package to perform linearity tests on dose
calibrators.
Performing daily checks using a radioisotope with a long
half-life to ensure that the activity values a dose calibrator
displays is stable over a long period of time.
A chart projecting how the activity of a source will decay
over a period of time at specified time intervals.
ATOMLAB Dose Calibrator Operation Manual Glossary
Biodex Medical Systems GL-1 Release 2.0
Accuracy Tests
Averaging Period
Background
Correction
Becquerel (Bq)
Calibration
Calibration Value
Calicheck
Constancy Check
Decay Chart
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