Eizo RadiForce GS520 Brochure & Specs

Selecting the Optimum
Digital Mammography Monitor

High-Resolution

High resolutions are required to display the correct
“information volume” of a digital mammography image.

High-Definition & High-Density

For the detection of mammary gland disorders which
appear as “distortion,” the monitor needs this required
performance in order to display the subtle structures.

Multi-Grayscale

For the detection of small tumors which appear as delicate
“density” differences, the monitor needs the correct display
of extremely subtle grayscale shadings.

DICOM Part 14 Compliance
with Quality Control Software

For unified image display between multiple monitors, the monitor is
required to adjust the characteristics to the grayscale standard DICOM
Part 14 through calibration.

Simple Quality Control Procedures

Quality characteristics gradually change over time and therefore in order to
maintain a consistent display, the monitor needs to be quality-controllable.

Image Sharpness

For detection of subtle masses and calcifications, the
monitor needs to display the outlines of the images with a
high degree of sharpness.

Brightness Uniformity

For correct luminance display of delicate “density”
differences, the monitor needs uniformity in brightness
across the entire screen.

1

2

1

Requirement

2

Requirement

3

Requirement

4

Requirement

5

Requirement

6

Requirement

7

Requirement

12-Bit Simultaneous Grayscale Display

Many current monitors use anti-glare panels, which have a waffled
surface to diffuse the reflection of surrounding light. However, this
also diffuses the light from the monitor’s backlight, which affects the
outline of an image, causing a viewing strain on the observer. With a
distinctive glare panel, there is no diffused reflection by the waffled
surface, and the outline of the image is displayed more clearly.
Therefore, the subtle images such as calcification and masses will be
easier to observe reducing the strain on the observer.

Sharper Resolution for Clearer Image Outline

MTF (Modulation Transfer Function) is a parameter to
define the display sharpness and resolution of a monitor

panel. The glare panel has better MTF characteristics than
the anti-glare panel meaning the
glare panel can be expected to
display the outline of a detailed
image more sharply.

8bit 256 Tones Image 12b it4,096 Tones Image

12-bit graphics board and 12-bit viewer software needed for 12-bit display.

1.2

1

0.8

0.6

0.4

0.2

0

MTF

Spatial Frequency (Line pairs/mm)

Anti-Glare Panel

Glare Panel

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

High-Definition and High-Density with Minute Pixels

Enlarged Image

Enlarged Image

Digital

Mammography

2048

2560

2048

1536

3.14 million
pixels

5.24 million
pixels

0.249mm 0.207mm 0.165mm

Pixel Size Comparison

Brightness Stabilization

At startup or upon wakeup, the EIZO patented drift correction
function quickly stabilizes the brightness level. In addition, a sensor
measures the backlight brightness and compensates for brightness
fluctuations caused by the ambient temperature and the passage of time.

Compatibility with Various Graphics Boards

Supports various input signals for compatibility with a wide
range of graphics boards so the user can select the board
according to budget and performance requirements. This
includes single link and dual link signals, as well as packed­pixel signal for users requiring 12-bit or 10-bit simultaneous
display.

Backlight Saver

With ScreenManager Pro for Medical utility software
installed, the Backlight Saver function allows for the monitor’s
backlight to turn off when the screen saver is activated and
the monitor’s backlight to turn on when the computer comes
out of the screen saver mode. This function helps to reduce
power consumption when the monitor is used for a prolonged
period of time.

High-Resolution for Delicate Grayscale Shadings

When selecting a monitor, it’s important to consider the “information
volume” of the medical images to be displayed.

Provided by Anjo Kosei Hospital

Please note that the reflection of surrounding light may increase when used in a bright environment.
Available with either a glare panel (GS520-CLG, GS520-BLG) or anti-glare panel (GS520-CL, GS520-BL).

This brightness stabilization function is EIZO patented technology (Japan patent numbers 3171808 and
3193315, US patent number 6188380).

0.165mm pixel size is the smallest pixel size among current
EIZO medical monitors providing high-definition and high­density

display without shadings

appearing granular.

CT

512

512

1

024

1280

1600

1200

2048

1536

Mammography

1914

2294

Chest CR

1760

2150

2

560

2048

DSA

1000

1000

Displaying
only 72%

DUE for Brightness Uniformity

Input Level 80% = 204/255

CCD Camera

Brightness Map

Input Level 80% = 204/255

CCD Camera

Brightness Map

100%

70%

lower

100%

70%

lower

EIZO's confidence in its product quality extends to brightness
stability which is also covered during the usage time specified in the
warranty.

Brightness Stability Within Usage Time Guaranteed

EIZO and its authorized distributors offer a five-year
limited warranty for RadiForce GS520.

Full 5-Year Warranty

Calibration Mode Selection

Selectable with the front panel buttons, the CAL Switch function
allows for various calibration modes of different modalities such as
digital mammography, CR, and CT images. Furthermore, with
ScreenManager Pro for Medical installed, auto mode settings can be
made with the Auto CAL Switch function.

Mammo Mode

Brightness : 500 cd/m

2

Grayscale : DICOM Part 14

Brightness : 450 cd/m

2

Grayscale : DICOM Part 14

Brightness : 350 cd/m

2

Grayscale : γ=2.2

CR Mode CT/MRI Mode

Without DUE With DUE

1

Requirement

3

Requirement

5

Requirement

4

Requirement

2

Requirement

To sustain image consistency, brightness uniformity is
required for medical imaging monitors. However, unified

luminance of the backlight is difficult to attain due to the
characteristics of LCD monitors. The Digital Uniformity Equalizer
(DUE) function provides optimum backlight luminance uniformity.

3

4

Distinctive Glare Panel

Featuring high-resolution, high-definition and multi-grayscale, the RadiForce GS520 is

Featu ring high -reso lutio n, hi gh-de finit ion and m ulti- grays cale, the RadiF orce GS520 is

designed specifically for digital mammography with a choice of distinctive glare panel to

designed spec ificall y for d igital mammo graphy with a choice of dis tinctiv e glare panel to

meet diversified environment usage.

meet di versified envir onment usage.

MONOCHROME
LCD MONITOR

Medical
Images
(Example)

Monitor
Resolution

Glare Panel

Incoming
Light

Reflections

Anti-Glare Panel

Incoming
Light

Reflections

Light from Backlight Light from Backlight

Change modes
with one touch.

Backlight

Sensor

Backside
of Panel

Hole for
Light
Transmission

Other Manufacturer's Monitor
with Drift Correction

EIZO RadiForce Monitors
with Drift Correction

Seconds

Drift Correction Comparison

Backlights
switch off

automatically

Cuts power consumption
by 11%

RegularUse

18 hours / day

2 hours

16 hours / day

Along with EIZO's new frame rate control technology
(patent pending), 4,096 (12-bit) grayscale tones can be
displayed simultaneously from an abundant palette of

13,771 tones for high-definition digital mammography.

Main Board

Brightness (cd/m2)

“Information volume” of a digital mammography image
should exceed 5 million pixels. When a lower resolution

monitor displays this “information volume,” the monitor
stretches the information forcing the mosaic to appear as shadings.
With a 2048 x 2560 resolution or 5.24 million pixels, the stretching
effect is minimized and the mosaic becomes suitable for rendering
subtle masses and calcifications, within the mammography image.

Same Brightness !

Quality Control Sensor

Digital Mammography Monitor

Quality Control Tool

Four options are available:

Displaying the Optimum Digital Mammography Image

EIZO offers all the necessary components for correct digital mammography image display.

Bit

Compatible Operating System

Frame Buffer Memory

Bus Interface

Maximum Disply Resolutions

Output Terminals

Dot Clock

Scanning Frequency (H, V)

Maximum Power Consumption

12-bit /10-bit / 8-bit
Windows XP / 2000 Professional
128 MB
PCI 32-bit (33 MHz / 66 MHz)
2048 x 2560
DVI-I x 2
Up to 148 MHz

103.9 kHz
50 Hz

16.8 watts

High-Performance Graphics Board

Standard Configuration

10-bit / 8-bit
Windows XP / 2000 Professional
256 MB
PCI 32-bit (33 MHz) / 64-bit (66 MHz)
2048 x 2560
DVI-I x 2
Up to 148 MHz

103.9 kHz
50 Hz
40 watts

8-bit
Windows XP
1 GB
PCI Express x 16
2048 x 2560
DVI-D x 2

214.25 MHz
131 kHz
50 Hz
75 watts

8-bit
Windows XP
256 MB
PCI Express x 16 / x 1
2048 x 2560
DVI-D x 2
162 MHz
75 kHz
60 Hz
22 watts

Accessories

Monitor Cleaning Kit

Keep your screen free from dust and fingerprints with
this screen cleaner kit. Includes pump spray and cloth.
(Bundled with GS520-CLG and GS520-BLG.)

Panel Protector

Protect against scratches and dust with high light
transmission panel.

Dual Height Adjustable Stand

Mount two panels in either portrait or landscape
orientation.

5

6

■PAS 1054

“Requirements and Testing of Digital Mammography
Equipment” established by the Normenausschusses
Radiologie (DIN NAR) in cooperation with the Deutschen
Röntgengesellschaft (DRG) and others. In line with the
QS-RL (Qualitätssicherungs-Richtlinie) quality assurance
ordinance, it is mandatory in Germany to refer to this
standard when conducting monitor quality assurance.

EIZO's easy-to-use RadiCS quality control
software performs precise calibration conforming
to DICOM Part 14 and enables quality control
complying with ACR Practice Guideline and
other QC standard for digital mammography
monitors.

Once attached to the top of the monitor the
Clip-On Swing Sensor G1 can remain in place

and is ready for use. This saves the time and
trouble of attaching
and removing it
whenperforming
quality control tasks.

Quality Control of Digital Mammography Monitor

As with the use of film mammography, image quality testing of
the monitor at installation and regularly during use should be
carried out. This ensures that the monitor maintains a consistent
display of quality digital mammography.

●An option of

An opt ion of

clear

cle ar

base and

bas e and

blue

blue

base backlights are available.

base backlights are available.

●Paired monitors which provides the same

Paired monitors which provides the same

color and grayscale for two monitors

co lor a nd gr ays cal e for two m oni tors

bundled as a pair in one box, also available.

bundled as a pair in one box, also available.

■ACR“Practice Guideline for Determinants of Image

 Quality in Digital Mammography”

A guideline established by the American College of Radiology
(ACR) in cooperation with the American Association of
Physicists in Medicine (AAPM), Radiological Society of North
America (RSNA), and Society for Imaging Informatics in
Medicine (SIIM).

■EUREF “European Guidelines for Quality Assurance

in Breast Cancer Screening and Diagnosis”

A standard issued by the European Commission in
cooperation with the European Reference Organization for
Quality Assured Breast Screening and Diagnostic Services
(EUREF), and European Breast Cancer Network (EBCN),
European Society of Mastology (EUSOMA).

54 cm 21.3"
Monochrome LCD Monitor

Dimensions

[

Unit: mm

]

EIZO NANAO CORPORATION supports Pink Ribbon activities.

Model Variations

Cabinet Color

Panel

Active Display Size (H x V)

Viewable Image Size

Native Resolution

Pixel Pitch

Grayscale Tones

Viewing Angles (H, V)

Brightness

Recommended Brightness
for Calibration

Contrast Ratio

Response Time

Scanning Frequency (H, V)

Dot Clock

Input Signals

Input Terminal

USB Ports

USB Standard

Power Requirements

Power Consumption

Power Save Mode

Sensor

Power Management

OSD Languages

Net Weight

Hole Spacing

Certifications and Standards

Supplied Accessories

GS520-CLG: Clear Base with Glare Panel
GS520-BLG: Blue Base with Glare Panel
GS520-CL: Clear Base
GS520-BL: Blue Base

Black

TFT Monochrome LCD Panel (IPS)

337.9 x 422.4 mm

Diagonal: 540 mm

2048 x 2560

0.165 x 0.165 mm

4,096 from a palette of 13,771 tones

170°, 170°

700 cd/m

2

(typical)

500 cd/m

2

800:1 (typical)

100 ms (typical)

31- 135 kHz, 19-51 Hz
Frame synchronous mode: 49 - 51 Hz

300 MHz

DVI Standard 1.0

DVI-D 24 pin

1 upstream, 2 downstream

Standard Rev. 2.0

AC 100 -120 V, 200 -240 V: 50 / 60 Hz

90 watts

Less than 1.2 watts

Backlight Sensor

DVI DMPM

English, French, German, Italian, Japanese,
Simplified Chinese, Spanish, Swedish,
Traditional Chinese

With Stand: 9.6 kg
Without Stand: 6.6 kg

VESA standard (100 x 100 mm)

CE (Medical Device Directive), TÜV/GM
(EN60601-1), cTÜVus (UL60601-1, CSA C22.2
No. 601-1), CB (IEC60601-1), VCCI-B, FCC-B,
Canadian ICES-003-B, c-Tick, FDA 510(k) for
Mammography and General Radiography,
RoHS

AC power cord, user's manual, signal cable
(DVI-D ~ DVI-D), USB cable, EIZO LCD Utility
Disk (RadiCS LE, ScreenManager Pro for
Medical software), ScreenCleaner (GS520-CLG,
GS520-BLG only), warranty card

90°

40°

512.5

340

388

424

480

88

61.5

Height Adjustment 82