CAPINTEC, INC. CAPTUS
®
3000
CHAPTER 5
QUALITY ASSURANCE
INTRODUCTION ............................................................................................. 5-1
Recommended Routine for CAPTUS
®
3000 System ................................ 5-1
SETTING UP QA PARAMETERS ................................................................... 5-2
AUTO CALIBRATION ..................................................................................... 5-5
About Auto Calibration ............................................................................. 5-10
CONSTANCY TEST ....................................................................................... 5-10
CHI-SQUARE TEST ....................................................................................... 5-15
MDA TEST ..................................................................................................... 5-19
VIEWING SYSTEM PARAMETERS ............................................................... 5-22
VIEWING AND PRINTING HISTORY ............................................................. 5-24
INTRODUCTION
There are several Quality Assurance tests that should be performed periodically on the
CAPTUS
®
3000 system to ensure its optimum operation.
The Quality Assurance (QA) tests include the following: Auto Calibration, Constancy Test,
Chi-Square Test and MDA (Minimum Detectable Activity) Test. The CAPTUS
®
3000
performs all these tests quickly and automatically using the two 0.5µCi reference sources,
Cs137 and Eu152, supplied with the system. The software automatically saves all the results
from these tests.
For systems with two detectors, (Uptake Probe and Well Counter), the Quality Assurance
tests must be performed on both the detectors. Note that if a Drilled Probe is used, both the
Probe and Well should be calibrated, even though there is only one detector. Each software
module uses the calibration parameters of the particular detector that is associated with the
module. For example, the Thyroid Uptake program uses the calibration parameters of the
Probe, and the Wipe Test program uses those of the Well.
Note: For systems with a Well Counter or a Drilled Probe, sources should be in the range of
0.1 to 1.0µCi.
Recommended Routine for CAPTUS
®
3000 System
1. Turning on the System – If your system will be used in a single location, we recommend
that you leave the computer powered at all times. The monitor and printer may be turned
off at the end of the day.
July 14 QUALITY ASSURANCE 5-1
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