TruNode
®
Gamma Probe System User Manual
20
9.
TROUBLESHOOTING
Symptom: radiation count rate greater than zero even when
no radiation present after contacting radioactive tissue
Resolution: decontaminate probe tip of radioactive material
using sterile process
Symptom: spurious radiation counts in conjunction with
energizing electrocautery device or other radio-frequency
emitter
Resolution: move electrocautery device cable or other radio-
frequency emitter away from probe
Symptom: spurious radiation counts not associated with
radiation contamination or electrocautery device or other
radio-frequency emitter
Resolution: replace probe
Symptom: insufficient or complete lack of radiation counts
when locating the probe over a known source of high
radioactivity
Resolution: replace probe
Symptom: new probe or probe that has not expired wo
n’t
connect with a UFU.
Resolution: turn the UFU off then back on
–
the UFU must be
turned off prior to connecting to a new probe.
