Capintec CAPTUS 2000, Owner'S Manual

Page: 170 / 206

CAPINTEC, INC CAPTUS
®
2000
Figure 9-13
Note that all bioassay measurements must be performed in a low background area to insure
adequate detection of low activity.
Select
OK to proceed with the background measurement. During the counting process,
COUNTING BACKGROUND will flash in red above the spectral display. Once the
measurement has been completed, Figure 9-14 will appear and require data validation.
Figure 9-14
To accept the data and proceed to the next step in the measurement sequence, select
YES .
To reject the data and return to the previous counting prompt, select NO .
Once the background measurement has been completed and the data saved, Figure 9-15
will appear for the next step in counting sequence, the measurement of the staff member’s
thyroid. Place the collimator flush against the person’s neck to insure maximum sensitivity
and shortest source to detector distance. This provides a source to detector distance of 16.5
cm for the standard ANSI Thyroid Uptake Collimator, and a distance of 6 cm when using the
specially designed Bioassay Collimator. Center the thyroid area in the collimated field of
view.
9-12 BIOASSAY July 00