GE HEALTHCARE
DIRECTION 5394227, 12 LOGIQ S8/LOGIQ E8 SERVICE MANUAL
6 - 12 Section 6-3 - Volume Navigation Calibration Procedure
6-3-5 Measure Initial Accuracy
In order to know if the calibration correction is good, you need a baseline measurement of the current
accuracy.
1.) Identify a point in the phantom (optional) that you can see from multiple angles. For example, from
the top of the phantom (optional), from the top of the phantom with the probe turned 90 degrees and
from the side of the phantom. A point at approximately 6 cm depth is recommended.
2.) Select the GPS Marker key and select Delete All.
3.) Select the Measure Accuracy key.
4.) Scan to the first point of interest. Holding the probe steady, move the Windows Pointer over the
point of interest and press the Right Trackball key. A GPS Target Marker (labeled “1”) is placed
on the point of interest.
5.) Change the orientation on the probe 90 degrees and mark the same point again. Write down the
results shown on the status bar.
(Prior to Correction) Distance #-# = _________ [mm]
(After Correction) Distance #-# = _________ [mm]
6.) Return to the original probe orientation from step 3 and mark the point a third time. This point should
be at the same location as the point from step 3.
7.) Change the orientation of the probe so that you are scanning the same point again, but from the
side of the phantom (optional). Mark the point a fourth time. Write down the results shown on the
status bar.
(Prior to Correction) Distance #-# = _________ [mm], mean (2 values) = __________mm
(After Correction) Distance #-# = _________ [mm], mean (2 values) = __________mm
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