17-19 Operators’ Manual
990400 Rev C 2010 May 1
12-6
24. Right click view and select Distance.
25. Drag the Distance cursor to draw a line from the outside line of
set 16 to the outside line of set 10, as shown above.
26. The measurement (displayed in upper corner of image) should
be between 41 and 42 mm.
27. Call Technical Support, if the measured value is not within this
range.
Hounsfield Unit (HU) Measurements
This procedure checks consistency in various measurements. The
positioning and dimension of each Region of Interest (ROI) is very
important. Be consistent between each assessment to achieve the
minimum deviation.
28. Perform a second scan (described in steps 5 - 16) using the
following settings:
On Patient Information panel:
Enter QA Test in the First Name field and Hounsfield in the
Patient ID field.
On the Volume tab:
Size of Reconstruction Volume: Diameter 16cm - Height 13cm
Resolution: .4 voxel, 8.9 Seconds
Quantum IQ: NOT selected
29. From the preview scan, access the QA Test images for
evaluation by double clicking Coronal View. (bottom image,
2
nd
from the right).
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