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Discontinued Models


World’s First 3MP-based Display FDA Cleared for Digital Mammography ....

3MP with ISD Technology 21.3" Digital Mammography Display

3MP-based Display for Digital Mammography

Digital mammography viewing demands an extraordinarily high level of precision from your LCD display. Totoku's MS31i2 redefines new standards of care by over-delivering resolution and clarity for improved accuracy in breast cancer screening.
With integrated ISD (Independent Sub-pixel Drive) technology, the MS31i2 exceeds resolution values of traditional 5 Mega-pixel displays, and due to economies of scale, is more affordable than its 5 megapixel counterpart. Introducing the MS31i2, with ISD technology enables a 3Mega-pixel-based LCD to render 9 mega sub-pixel images, exceeding the current standards of care for primary mammography diagnosis. The MS31i2 is FDA (510K) cleared for the use of Digital Mammography.


Features|Specifications & Dimensions|Options

High resolution of 9M sub-pixels realized by ISD High resolution of 9M sub-pixels realized by ISD

Faithful Reproduction of Image Details
While a pixel pitch of 3MP display is 210µm, MS31i2 achieves 70µm in sub-pixel chain direction by newly developed ISD technology to realize excellent depiction of image details.

Advanced Image Quality with Less Degradation

To display an overall image whose native resolution is higher than the monitor is able to reproduce, the image is converted to a lower resolution image with a certain amount of data loss.
The MS31i2 with high resolution offers excellent image reproduction, faithful to the original captured by the modality device with less image degradation.

ISD (Independent Sub-pixel Drive) Technology
Driven by each sub-pixel value corresponding to detailed information recorded in an original image, three times resolution enhancement is achieved. (Patent pending) In addition, up to 1276 shades of gray are now simultaneously displayable by the upgraded ISD technology.

*Customized viewer software is required to display images with enhanced resolution by the ISD technology.


3MP-based display with the ISD technology performs either equaling or surpassing the 5MP's

Comparison between 9 MsP and 5 MP

Visibility comparison
Visibility comparison of existence and shape evaluation of microcalcifications (MCLs),
using 50 clinical cases obtained by a digital mammography system (pixel size: 70um).

Scoring method for 9MsP superiority

Visibility comparison
The most of cases were rated as "Equivalent", and 23% were answered as "Better". Our study indicated that the potential performance of the 9MsP LCD was equivalent to or better than the conventional 5MP LCD for evaluating very small MCLs and interpreting clinical digital mammography with various types of MCLs.

Display magnification % was adjusted freely by each observer.

Comparative Study between 9 Mega-sub-Pixel and 5 Mega-Pixel LCDs using Simulated Microcalcification images and Clinical Mammograhy (RSNA2009)
Katsuhiro Ichikawa Ph. D1), Hiroko Kawashima, MD 1), Aya Nishimura 2), Mikio Hasegawa 3), Naohiro Kimura 3)
1) Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 2) Kanazawa University, hospital, 3) TOTOKU Electric Co., Ltd.

Visual Detection study using images of 0.15mm simulated microcalcification
This chart shows relationship magnifications and dectablility for the 9MsP and the 5MP's where the 9MsP exceeds 5MP in detectability.


Title: Clinical Usefulness of Super High-Resolution Liquid Crystal Displays Using Independent Sub-pixel Driving Technology International Workshop on Digital Mammography (IWDM) 2008 August 2008, THE UNIVERSITY OF ARIZONA, U.S.A
Katsuhiro Ichikawa 1), Hiroko Kawashima 2), Naohiro Kimura 3), and Mikio Hasegawa 3)
1) Graduate School of Medical Science, Kanazawa University, 2) Department of Radiology, Kanazawa University Hospital, 3) Totoku Electric Co., Ltd.


Special AR Coating for Film-like Black and Improved Sharpness

TOTOKU's new special AR coating technology addresses properties of focus, noise reduction, contrast, and viewing angle achieving film-like black and accurate reproduction of images. (Patent pending)



Simultaneous display of 1276 shades of gray Simultaneous display of 1276 shades of gray

Realizes smoother grayscale display required for medical image displays. 


Newly developed luminance stabilizing system λ-Sentinel II New luminance stabilizing system λ-Sentinel II

λ-Sentinel II consists of a luminance sensor and luminance control circuit. The luminance sensor, integrated into the front bezel, consistently monitors and accurately stabilizes luminance on the screen by rapidly communicating with the backlight sensor.
In addition, a build-in luminance sensor provided with i2 models enables even simpler calibration without attaching the calibration sensor.



Remote grayscale check and remote calibration functions Remote grayscale check and remote calibration functions

Conformance testing to DICOM GSDF and calibration can be remotely accomplished. These features minimize the burden on display administrators.

* Optional PM Medivisor software is required.



Luminance equalizer λ-Uniformity Congruence) Luminance equalizer λ-Uniformity Congruence

Is built in to achieve highly accurate luminance uniformity across the screen. Luminance unevenness is minimized in the final tune-up prior to shipping.
* Images shown are for illustrative purposes only.


Calibrates luminance and gamma to enable smooth grayscale display that is faithful to DICOM GSDF.Calibration function

Calibrates luminance and gamma to enable smooth grayscale display that is faithful to DICOM GSDF.
* Optional calibration kit is required.



Hardware pivot function for fast drawing in portrait on landscape orientation

Stress-free operation is made possible by fast drawing speed for on-the-fly change to portrait.


OSD Information Display OSD Information Display

With a push of a button, the display's current status can be checked such as the display model, total operating time, actual measurement of luminance, and calibration settings.


LED indicator to inform of current statusLED indicator to inform of current status

A glance at the LED indicator tells you the display's current operating status.



Enhanced convenience with utility software:

Advanced power saving*

The backlight dims as the screensaver starts, reducing power consumption and preventing unnecessary deterioration of the backlight.
* This feature may not be available, depending on the specifications of the graphics card used.

Gamma check

18 points of luminance values are measured and plotted into a graph.

Ambient light and display luminance measurement

The built-in sensors measure display luminance and ambient illuminance.

Pairing service to match colors of two displays (Optional)




Worldwide medical safety standards Worldwide medical safety standards

This display is certified under various medical safety standards that are much more demanding than those for general-purpose IT equipment.

Specifications & Dimensions

Features|Specifications & Dimensions|Options


Model Name MS31i2
LCD Panel Technology 21.3-inch, Monochrome, TFT active matrix IPS Technology
Display Area 433mm x 325mm
Pixel Pitch 0.2115mm x 0.2115mm
Contrast Ratio 900:1 (typ)
Maximum Luminance 1450cd/m² (typ), (calibrated to 410cd/m²)
Viewing Angle 170° horizontal and vertical (typ)
Visual Performance Available Resolution 1536 X 2048, ISD ON: 1536 X 6144(sub-pixel)
*MS31i2 supports 9M-ISD and 3M-normal modes.
To use MS31i2 in 9M-ISD mode, customized viewer software is required.
Grayscale 3061 shades of gray to 256 shades of gray
Simultaneous display of 1276 shades of gray is possible with the customized viewer.
Input Signal Input Sync Signal DVI 1.0 compliant
Plug and Play DDC2B compliant
Input Power Supply Input AC Adapter 100V-240V (±10%) 50/60Hz
Maximum Power Consumption 95W (typ), (with power management feature)
Features Calibration Control Luminance, Gamma, Capability of saving 3 sets of LUT settings (An optional calibration kit is required.)
OSD Information Display Model name, Serial No., Total operating time, Calibration settings (Operating time from Last Calibration, Luminance, Gamma, etc.), Current luminance, etc.
USB Hub USB Rev. 2.0 compliant, Self-powered
USB upstream connector (x1), USB downstream connector (x2)
Other Features Luminance Uniformity Correction Function, Hardware Pivot function, LED indicator
Standards UL60601-1, CSA C22.2 No. 601.1, MDD/CE, FCC-B, VCCI-B , FDA510(k)
Physical Characteristics Dimensions (WxHxD) Landscape : 474.0 (W) X 468.4 / 529.9 (H) X 220.0 (D) mm
Portrait : 367.0 (W) X 521.9 / 583.4 (H) X 220.0 (D) mm
Weight Net: approx. 11.2kg, Without tiltstand: approx. 7.0kg
Tilt Stand Tilt, Swivel, Portrait / Landscape
Mount 100mm VESA compliant
Security Slot On the back of the panel and the tilt stand
LCD surface treatment Special AR coating
Accessories AC adapter, Power cord (3P), DVI cable, USB cable, User manual




Features|Specifications & Dimensions|Options

Graphics Card Graphics cards

PM Medivisor

Display performance monitoring software

QA Medivisor

Software for acceptance and constancy testing

Medivisor Grayscale

Calibration software


Pairing service to match colors of two displays


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