Check Source Holder Use; Performing Calibration (Systems Test); Pre-Surgery Set Up; Before Power Is Turned On - CareWise C-Trak Apollo User Manual

Check Source for C-Trak
A Sodium 22 (Na-22) check source should be used to
calibrate the system if an OmniProbe
The characteristics of Sodium 22 are:
• Primary photo peak energy: 511 keV
• Half life (time it takes for activity to decay
by one-half): 951 days (2.6 years)
The 5 µCi Na-22 check source (Product Code CSS)
should be replaced every 5 years.
See Appendix G for information on handling and
disposal provided by the manufacturer of the
Care Wise-supplied Check Source.

3.2 Check Source Holder Use

A Source Holder is used for calibrating C-Trak
the two pieces of the source holder and place the source inside
with the label facing the foam padding. Screw together. When
performing a System Test [Section 2.4-7], insert the nose of the
probe into the holder all the way so that it touches the source
disk and hold still for the duration of the test. When the System
Test is complete, remove the probe from the source holder.
NOTE: If using the OmniProbe
pull off and stay in the holder. Unscrew the base and push
the collimator with your finger or other soft object.
If using a C-Trak OmniProbe
®
on the probe for calibration. This allows it to fit properly into the
Source Holder. If a sterile drape (sleeve) is on the probe, it must
be removed before placing probe in the Source Holder.
The check source may be stored in the Source Holder
unless your institutional policies specify otherwise.
3.3 Performing Calibration
The system should be calibrated frequently to ensure optimal
sensitivity. Performing a System Test, in essence, performs a
calibration. The System Test (described in section 2.4-7) will
compare the test results from the current calibration to data
stored from previous tests of the same probe. A System Test will
ensure that all components are functioning properly.
Care Wise recommends that a System Test be performed each
time it is first used on any given day. A System Test is also
required if the OmniProbe is removed or replaced for any reason.
The software will notify the User if an OmniProbe is connected
which has never undergone a System Test.
OmniProbe PET
® ®
PET is in use.
®
systems. Unscrew
®
, the collimator may sometimes
®
, have the standard Tc collimator
®

4.0 Pre-surgery Set Up

Before use the system should be calibrated using
the supplied test source. (See page 4)

4.1 Before Power Is Turned On

If using the system in a wired mode, connect the probe cable
to the Right Panel probe connector [Figure 3]. Check the probe
cable for any significant nicks, cuts, exposed wires or damaged
connectors. If not using the probe cable, ensure that the
OmniProbe is connected to the Apollo handset and that the
handset is turned on. Connect the handset to the USB cable if
being used in that mode.

4.2 Background Test

A background test will determine if the equipment or the
environment is contaminated with radioactive material.
The background test should be conducted inside the operating
room immediately prior to probe use and the results logged to
establish the baseline or normal amount of radioactivity present.
1. Make sure the isotope that will be
used in the surgery is selected.
2. Remove or shield all known sources of radioactivity from
area. Point the probe up and away from all known sources.
3. Perform one or more 10-second counts with probe
pointed straight up. Log the results.
4. If the results are elevated from the last log entry,
decontaminate the probe in accordance with guidelines
in section 5.3. If results are still elevated, the environment
may be contaminated and the appropriate hospital
personnel should be informed.
CAUTION: If the instrument indicates a high background
when no radioisotope is present, the sterile disposable drape
may be contaminated. If such is the case, removing the
sterile drape from the probe should reduce the background
to a normal reading (if no radioisotope is present).
Continued indication of radioisotope after the sterile drape
has been removed may indicate that the probe body has
been contaminated. See section 5.3 Decontamination.
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