User`s manual

RadiCS
Chapter 9 Pattern
75
English
JIRA CHEST-QC
Supporting standard: JESRA
(1)
(1)
(3)
(3)
(2)(2)
Description
The JIRA standard clinical image and the judgment area of the TG18-QC pattern are combined,
so that the evaluation can be performed for each day of usage on a single image.
The image has
been further reduced for each resolution and added the gray circles to indicate the judgement areas. Note
that the gray circles in the above picture are overemphasized for explanation purposes.
No. Description Check Points
(1) Each of the gray circles has a simulated nodule
embedded in the center.
Both of the simulated nodules can be
recognized.
(2) The patches that are 5% and 95% of the
backgrounds are inside.
If they are very visible.
(3) There are nine cells at both the top and
bottom, and the grayscales change gradually.
In the mid tone area (tone changing area) of
the grayscales, two cells of the same tone are
located at both the top and bottom. Therefore,
a total of 16 grayscales can be identified
(same as TG18-QC) according to the nine cells
located at both the top and bottom.
Each of the 16 grayscales can be identified
clearly.
(Reversing Display Not Available)