CAPINTEC, INC. CAPTUS
®
3000
Figure 7-15
Normal Range frame – This defines the Minimum and Maximum for a Normal Range of
uptake percentage values measured at various Uptake Times. A percentage uptake
measured below or above this range is flagged as out of range in the patient reports.
There are no preset values for this range, and they may be entered as desired. This is an
optional setting.
Counting Parameters frame – The values for Counting Time (period of data collection),
Probe Distance (distance between the Probe and the patient to be counted) and
Calibration Time (of the capsule before administration) are preset to 300 seconds, 25 cm
and 12:00 respectively. These values are the default values used in the Patient
Information screen (Figure 7-9). They are typical in the procedure, but may be changed if
required. To set any or all of the parameters to have no default value, leave the box
blank.
ROI Selection frame – ROI defines the region of interest in the spectrum of the isotope
being measured and is based upon the peak energy (keV) of the uptake isotope selected.
A percentage of the primary peak is used to set the Low and High ends of the
observation window. The range should be sufficiently wide so that the entire peak is
within the measurement window and the slopes of the peak are not beyond range.
Note: The default ROI settings provide an adequate observation window for each of the
isotopes and are strongly recommended to be left unchanged for optimum
measurement results.
Report Font Size frame – This allows the setting of the font size used when printing the
Thyroid Uptake Report. Note that this setting only adjusts the font size of the printed
uptake measurement results. Large (10 point) is the default font size. Medium is
equivalent to 8 point; Small is equivalent to 7 point.
7-16 THYROID UPTAKE November 13
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