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Modern medical technology enables complex examinations. But in
the end, it is the radiologist who is responsible for fast and accurate
diagnostic findings. To support these findings in a soft copy read-
ing environment, flat-panel displays need to comply with the highest
visual requirements. Their image quality has a decisive influence on
diagnostic accuracy.
MultiSync MD Series grayscale displays – in combination with the
appropriate graphics controller – are designed for diagnostic imaging
and for use in Picture Archiving and Communication System (PACS)
applications. Furthermore, diagnostic imaging displays from NEC
Display Solutions are based on technologies and functions which
actively contribute to a reduction of cost of ownership.
9
Figure 1.
1
2
3
4
5
X-Light technology - a view
behind the screen
1 LCD panel
2 Polariser diffusing plate, etc.
3 Light guide plate
4 Color sensor
5 Temperature sensor
6 Current data of color sensor and
temperature sensor
7 Control of 3 inverters
8 Calibration of whitepoint via
pre-calibration in factory, software
(GammaComp MD) or reference
value of external sensor
a
9 Light sources, white light using
mixture of different phosphor
colors
Factory calibration and
consistency.
Using state-
of-the-art equipment
during production, each
NEC MultiSync MD Series
monitor is calibrated to the
DICOM display function
8
for luminance and to a
desired whitepoint (color
of the white). NEC Display
Solutions' patent-pending
7
X-Light
technology (Fig.
TM
1) has the unique ability
to control and adjust the
luminance and whitepoint
6
via an integrated fast-feed-
back internal backlight
sensor, which continuously
monitors and realigns
these settings to maintain
the factory calibration
throughout the life of the
monitor. X-Light technol-
ogy also alleviates the
color shift of the backlight
to the yellow spectrum.
Monitor matching and re-
duced downtime. X-Light
helps reduce service costs
as it enables a more flexible use of display equipment. Since all
X-Light-equipped monitors are set for the same whitepoint dur-
ing production, they can be exchanged at any time within one
location and swapped in existing dual- or multi-screen configu-
rations without calibration.
Standalone calibration and monitor matching.
MD Series monitors have been designed to maintain their fac-
tory calibration. However, if calibration or matching (Fig. 2) to
a replacement is required, the monitors can be configured using
the built-in, standalone algorithm programmed into the monitor's
firmware. This feature is useful for monitors that are not used in
a setup where calibration can easily be performed with a PC and
external software or non-supported
operating systems.
GammaComp™ MD calibration and
conformance software.
Quality control
and calibration/matching can also
be accomplished using GammaComp
MD (shipped with display), ensuring
consistent image quality on a single
display system. The software main-
tains the monitor's conformance to the
DICOM standard, while providing an
easy-to-use QA environment for medi-
cal imaging. Optionally, GammaComp
MD Administrator provides centralized
control and management of multiple
display systems.
NEC MultiSync
Figure 2.
USB
RESULT OF
MEASUREMENT
Target:
Luminance
400 cd/m
2
x cord 0.265
y cord 0.320
Source Display Target Display
USB
Display matching in the field
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