User`s manual

RadiCS
Chapter 9 Pattern
68
English
TG18-QC
Supporting standard: AAPM/ACR/JESRA/EUREF/IPEM/Basic QC/DMG QCM
No. Description Check Points
(1) The patches that are 5% and 95% of the
backgrounds are inside.
If they are very visible.
(2) Each of the 16 cell-grayscales can be identified
easily.
If the grayscale is displayed evenly spaced
apart. If the patch with the grayscale
±
4 at
each corner is visible.
(3) The 0 to 255 grayscales is displayed and its
continuity is identifiable.
The grayscale has no grayscale crash or
inversion.
(4) A white grid (grayscale 255) and a black grid
(grayscale 0) are displayed.
If there is any artifact around the border
between the white grid and the black grid.
(5) Horizontal/ver tical patterns of ever y dot
and every second dot of a white grid (255
grayscales) and a black grid (0 grayscale).
If the colors, white and black of the lines are
visible. If the center and the corner are the
same.
(6) Horizontal/vertical patterns of every dot and
every second dot of 130 grayscales and 128
grayscales.
If white and black lines at the low contrast
are the same in vision. If the center and the
corner are the same.
(7) Cx patterns for reference. A score of each
pattern is displayed at the right bottom.
Check the focus of (8) as seeing (7) for
reference.
(8) Each Cx pattern at the center and the corners
of the TG18-QC pattern is displayed with a
different contrast. It is mainly used to check the
focus.
(9) A white grid (grayscale 255) and a black grid
(grayscale 0) are displayed. The rectangle with
249 grayscales and that of 6 grayscales are
placed from the vertical line in the center.
If there is any artifact around the border
between the white grid and the black grid.
(10) Each of the three (0, 128, 255 grayscales) has
“QUALITY CONTROL” in the background. The
grayscale of the last letter “L” is the same as
that of the background. It gets one grayscale
less as a letter goes backwards.
At how less grayscales can the words (
“QUALITY CONTROL”) visible.
(Reversing Display Available)