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MiniCAT™ User Manual v5.2
© 2014 Xoran Technologies LLC
Procedure:
1. Scroll axially approximately 2 cm above the QC module to the large section of the water module.
2. Select a region centered on the axial view of the disk, make the region approximately 1500 sq.
mm.
3. Record the STD and Mean values for water and compare with the tolerance below.
Tolerance:
STD of water < 30, Mean ± 100 HU
11.5 Artifact Test
Equipment and Scan:
Quality Control Phantom, Water Calibration protocol.
Procedure:
1. To look for ring artifacts in the image, start at one axial extreme of the reconstructed QC
Phantom scan and scroll through all slices to the other extreme looking at each axial slice.
(Ensure that no rotations of the data have been applied – i.e.: restore original tilts.) The image
below represents artifacts that are visible in a reconstruction. This may indicate the need for
offset and gain calibration.
