User`s manual

RadiCS
Chapter 10 Information
84
English
Correlation Between AAPM and RadiCS
Pattern Check
Screens without the aspect ratio 1:1 are not applicable since the aspect ratio of the test pattern in
AAPM is 1:1. Therefore, RadiCS has patterns with its own solution for each one.
TG18-QC
TG-AD
TG18-AFC
TG18-CT
The same as each pattern. Scaling must be in accordance with a screen
resolution.
TG-UN80 Grayscale 204 white patterns. The same pattern of AAPM has a square
frame but RadiCS does not have any because it does not need to be
visible.
Luminance Check
AAPM except for Lamb < Lmin includes an equality sign in each judgment condition but RadiCS
does not.
The calibration setup, Lmax value will be input in the
Δ
L
’
max basic value as an initial setup when
performing a tasksetup.
The RadiCS luminance check Lmin is equivalent to AAPM L
’
min = (Lmin + Lamb) and Lmax is
equivalent to L
’
max = (Lmax + Lamb).
L
’
max/L
’
min means AAPM LR
’
( = Lmax + Lamb / Lmin + Lamb).
Grayscale Check
AAPM includes an equality sign but RadiCS doesn’t because of the target rate is < 10 % of GSDF. It
is one judgment condition for DICOM Part14 GSDF.
The grayscale measuring point is 18 points fixed and is unchangeable.
A measurement result is 17 points because it is expressed in (JND
n+1
-JND
n
)/2.
Uniformity Check
AAPM includes an equality sign in each judgment condition but RadiCS does not.
The uniformity is checked with TG18-UN80, 10. Screens without the aspect ratio 1:1 are not
applicable since the aspect ratio of the test pattern is 1:1. It also displays 10 % of the display area of
the window at grayscale 204 and 26 in the middle and corner of the screen and it measures the center
of the window.
Sensors
Noncontact and contact measuring devices are available in AAPM. Noncontact measuring devices
usually have a circular cylinder to block outside light. But RadiCS noncontact measuring devices do
not block outside light but measure it.
AAPM requires NIST measuring devices. LS-100 sensors are available for RadiCS.
Multiple Monitors
AAPM includes a determination for multiple monitors, but by default RadiCS is set not to make
such a determination. If necessary, make settings as indicated in the table above. AAPM includes an
equality sign but RadiCS does not.