Totoku ME511L Use and maintenance manual

Version 3.1
Applicable Models
ME511L, ME551i2, MS31i2, MS33i2, MS51i2, MS53i2

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TOTOKU ELECTRIC CO., LTD.
MQSA Quality Control Manual
MQSA Quality Control Manual
for
Monochrome Monitors for Mammography
Foreword
Purpose of this Document
This document is for Monochrome Monitors for Mammography, diagnostic display
monitors to perform the Quality Control (QC) tests to meet the guidelines / regulations
of Mammography Quality Standards Act (MQSA) for the reading of the digital
mammographic images. This document describes the procedure for performing the
Quality Control (QC) tests for Monochrome Monitors for Mammography, diagnostic
display monitors based on the guidelines / regulations of Mammography Quality
Standards Act (MQSA).
Scope of this Manual
This document is referenced when conducting the Quality Control (QC) tests to
Monochrome Monitors for Mammography, diagnostic display monitors based on the
guidelines / regulations of Mammography Quality Standards Act (MQSA) for the reading
of the digital mammographic images through the full-eld digital mammography (FFDAM)
system.
Regulatory Considerations
For the facilities under the MQSA regulations, application of this manual is MANDATORY.
Failure to follow these quality assurance procedures can result in loss of MQSA
certication at facilities subject to the MQSA regulations. For the facilities under the
MQSA guidelines, application of this manual is RECOMMENDED. Otherwise, the
facilities may identify other ways of meeting MQSA requirements.
Applicable Models
ME511L, ME551i2, MS31i2, MS33i2, MS51i2, MS53i2

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MQSA Quality Control Manual
Contents
Foreword .............................................................................................................2
Contents ..............................................................................................................3
Installation...........................................................................................................5
Chapter 1: QC TESTS FOR THE RADIOLOGIC TECHNOLOGIST
1 Introduction.....................................................................................................6
2 Intervals for Procedures ................................................................................6
3 Cleaning Display.............................................................................................7
3.1 Objective....................................................................................................7
3.2 Frequency..................................................................................................7
3.3 Required Equipment..................................................................................7
3.4 Procedure ..................................................................................................7
4 Viewing Conditions Check.............................................................................8
4.1 Objective....................................................................................................8
4.2 Frequency..................................................................................................8
4.3 Required Equipment..................................................................................8
4.4 Procedure ..................................................................................................8
Form 1: Daily Test .............................................................................................9
5 Image Quality Check - SMPTE pattern........................................................10
5.1 Objective..................................................................................................10
5.2 Frequency................................................................................................10
5.3 Required Equipment................................................................................10
5.4 Procedure ................................................................................................10
Form 2: SMPTE Pattern..................................................................................12
Chapter 2: QC TESTS FOR THE MEDICAL PHYSICIST
1 Introduction...................................................................................................13
2 Intervals for Procedures ..............................................................................13
3 Viewing Conditions Check and Setting......................................................14
3.1 Objective..................................................................................................14
3.2 Frequency................................................................................................14
3.3 Required Equipment................................................................................14
3.4 Procedure ................................................................................................14
Form 3: Viewing Condition Check and Setting ...............................................15
4 Display Calibration ......................................................................................16
4.1 Objective .................................................................................................16
4.2 Frequency ...............................................................................................16
4.3 Required Equipment ...............................................................................16
4.4 Procedure ...............................................................................................16
Form 4: Display Calibration.............................................................................20

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MQSA Quality Control Manual
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5 Image Quality Check – SMPTE pattern.......................................................21
5.1 Objective..................................................................................................21
5.2 Frequency................................................................................................21
5.3 Required Equipment................................................................................21
5.4 Procedure ...............................................................................................21
Form 5: SMPTE Pattern..................................................................................25
Denition ...........................................................................................................26

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MQSA Quality Control Manual
INSTALLATION
Connecting the cables
Follow the instructions in the display manual to properly connect the communication
cable supplied with the display.
Installing calibration software and sensor driver
Install the calibration software “Medivisor Nx” and sensor driver into the workstation.

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MQSA Quality Control Manual
Chapter 1: QC TESTS FOR THE RADIOLOGIC
TECHNOLOGIST
1 INTRODUCTION
QC tests that are listed in this section are to provide the procedure for maintaining
Monochrome Monitors for Mammography, diagnostic display monitors in its designed
optimal quality conditions by keeping the display monitors free of any image quality
deterioration and by performing the regular viewing conditions and image quality checks.
QC tests for the diagnostic display are described in the following sections:
• Section 3: Cleaning Display
• Section 4: Viewing Conditions Check
• Section 5: Image Quality Check - SMPTE pattern
2 INTERVALS FOR PROCEDURES
The table below shows intervals for each procedure described in this manual.
Procedure Interval
Cleaning Display Daily
Viewing Conditions Check Daily
Image Quality Check - SMPTE pattern Daily

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MQSA Quality Control Manual
3 CLEANING DISPLAY
3.1 Objective
To maintain the screen, clean by keeping the display screen free from any
objects (dust, nger print, etc.) of the display monitor of Monochrome Monitors for
Mammography
3.2 Frequency
Daily
3.3 Required Equipment
Cleaning kit (soft cloth and liquid)
3.4 Procedure
Note: The cabinet is made of plastic and coated metal plate. Do not apply thinner,
benzene, or alcohol. It could damage the plastic and/or the coating could
come off. An optional cleaning kit is recommended to clean the panel surface
(protective lter).
1. When cleaning the display monitor, remove the AC adaptor from the display
monitor and the wall outlet for your safety.
2. Dampen the cleaning cloth with the agent and remove the dust gently. Finish up
by wiping with the dry cloth.
3. Clean the LCD panel (protective lter) and the surface periodically with a
dampened soft cloth.
4. Record the result on the form 1 in this manual.
Note: Be careful when handling the LCD panel (protective lter). Do not rub or
hit with sharp or hard objects. Do not press on the panel. It could cause
unevenness in luminance or damage the panel.

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MQSA Quality Control Manual
4 VIEWING CONDITIONS CHECK
4.1 Objective
To keep and maintain the optimal viewing conditions on Monochrome Monitors for
Mammography
4.2 Frequency
Daily
4.3 Required Equipment
Monochrome Monitors for Mammography, display monitor
Serial cable for communicating between PC and display monitor (for ME511L)
USB cable for communicating between PC and display monitor (for other models)
4.4 Procedure
1. Review the data form “Form 3: Viewing Conditions Check and Setting” on P15
(completed by the Medical Physicist during the most recent evaluation) posted in
the reading room. Refer this form as optimal during your future evaluation.
2. Match the room conguration where each display monitor is located to the one
specied in the data form.
3. Adjust the room conguration if the current reading room conguration differs
from the one established as optimal in the data form. (For example, if desk lights
were specied to be turned off, turn them off, or, if curtains were specied to be
closed, close them.)
4. Complete the record of the check on the form 1 in this manual.

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MQSA Quality Control Manual
Form 1: Daily Test
Daily
Facility:
Room:
Checked by:
Year Month
Date 1234567891011 12 13 14 15 16
Initial
Cleaning
Display
Viewing
Conditions
Date 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Initial
Cleaning
Display
Viewing
Conditions
Monitor Serial #1:
Monitor Serial #2:

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MQSA Quality Control Manual
5 IMAGE QUALITY CHECK - SMPTE PATTERN
5.1 Objective
To calibrate the display monitors as accurate as possible for the reading of
mammographic images on Monochrome Monitors for Mammography
5.2 Frequency
Daily
5.3 Required Equipment
Monochrome Monitors for Mammography, display monitor
Serial cable for communicating between PC and display monitor (for ME511L)
USB cable for communicating between PC and display monitor (for other models)
Calibration software (Medivisor Nx)
5.4 Procedure
1. Select “TOTOKU Medivisor Nx”>”Medivisor Nx” from the Start menu to start this
software application.
2. Select the “Test Pattern” Tab. Click the display monitor icon to choose the
monitor to test and click the “SMPTE” pattern.

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MQSA Quality Control Manual
3. Check the SMPTE pattern.
The “SMPTE” pattern will appear. View the display monitor directly in front of the
display monitor. (The observer must be at least 50cm from the display screen.)
5% black 95% white
4. Visibility of the following features must be examined.
a. The 0 - 5% contrast pattern
b. The 95 - 100% contrast pattern
c. The 0 - 100% each gray level step from the adjacent squares (For example:
the 0 - 10% square or the 90 - 100% square)
d. The borders and lines of the pattern and that they are straight and the pattern
is in the active area of the display monitor
e. No distortion and misalignment using the grids across the screen (Linearity)
f. The sharpness of the alphanumeric characters and that they are in focus
g. The high contrast line-pair images (each line in vertical and horizontal stripes
in the square) at the center and on the corners of the SMPTE pattern without
magnication
h. The streaking in and around the white and the black rectangles (Video
Characteristic)
5. Record the result on the form 2 in this manual.

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MQSA Quality Control Manual
Form 2: SMPTE Pattern
Daily
Location Name:
Address:
Monitor Serial #1:
Monitor Serial #2:
Test Display #1 Display #2
0%-5% contrast
95%-100% contrast
Gray level steps
Boarders, lines, centering
Linearity
Alphanumerics
Line-pair images (center)
Line-pair images (corners)
Video Characteristics
(Pass or Fail)
Testing Person Name:
Signature:
Date:

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MQSA Quality Control Manual
Chapter 2: QC TESTS FOR THE MEDICAL
PHYSICIST
1 INTRODUCTION
The QC tests listed in this section must be performed by the Medical Physicist to ensure
that the diagnostic display monitor of Monochrome Monitors for Mammography is
operating in its optimal and highest quality standard. These tests also must be performed
when a major change that possibly causes the change to its viewing quality and to
its viewing performance such as the installation of a new diagnostic display monitor
of Monochrome Monitors for Mammography, the repair or replacement of a major
component of the system, or relocation of the diagnostic display monitor happens.
QC tests for the diagnostic display are described in the following sections:
• Section 3: Viewing Conditions Check and Setting
• Section 4: Display Calibration
• Section 5: Image Quality Check – SMPTE pattern
2 INTERVALS FOR PROCEDURES
The table below shows intervals for each procedure described in this manual.
Procedure Interval
Viewing Condition Check and Setting Annually
Display Calibration Annually
Image Quality Check – SMPTE Pattern Annually

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MQSA Quality Control Manual
3 VIEWING CONDITIONS CHECK AND SETTING
3.1 Objective
To keep and maintain the optimal viewing conditions on Monochrome Monitors for
Mammography
3.2 Frequency
Annually
3.3 Required Equipment
Illuminance Meter
3.4 Procedure
Before the measurement:
• Turn on the display monitors at least 30 minutes (TOTOKU recommends 60
minutes.) before starting the measurement.
• Reduce any lighting coming from other sources such as viewboxes, over head
or task lighting to the minimum and check that the ambient lighting is stable (no
ickering effect due to any of the lighting sources that are turned on).
1. Make each display monitor as dark as possible. (For example, by minimizing the
application windows or displaying a black at eld)
2. Measure the illuminance. (Face the photometer away from the surface of the
display screen during the illuminance measurement.)
3. Check that the measured illuminance value does not exceed 20 lux. (Adjust the
room ambient light and/or the room conguration to maintain the illuminance
value under the limit if it exceeds.)
4. Fill out the display positions, room lights, desk lights, etc. established as optimal
on the form 3 in this manual.
(Note: This data form will be referred by the Radiologic Technologist as optimal
during their daily “VIEWING CONDITIONS CHECK” on the page 8.)
5. Record the ambient light value on the form 3 in this manual.
6. Draw a room layout sufciently accurate on the form in this manual, so that the
Radiologic Technologist can reproduce the illumination conditions established as
optimal during their daily “VIEWING CONDITIONS CHECK”.
7. Post the form in the reading room, so that the Radiologic Technologist can easily
access and refer during their daily “VIEWING CONDITIONS CHECK”.
8. Restore each display to its normal condition, i.e., undo any measures taken in
Step 3.4.1 to darken the display.

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MQSA Quality Control Manual
Form 3: Viewing Conditions Check and Setting
Annually
Facility:
Room:
Date:
Room Description
Display Positions:
Room Lights:
Desk Lights:
Others:
Ambient Light value:
Note: Conrmation of this value is not part of the daily check by the Radiologist
Technologist.
Important: The ambient light level must not exceed 20 lux.
Room Layout
Note: Draw sufciently accurate for the Radiologic Technologist.
※ Post this form in the reading room for the Radiologic Technologist’s daily
“VIEWING CONDITIONS CHECK”.

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MQSA Quality Control Manual
4 DISPLAY CALIBRATION
4.1 Objective
To ensure that an accurate evaluation of the display monitors will be conducted to
perform an accurate calibration for the reading of the mammographic images on
Monochrome Monitors for Mammography
4.2 Frequency
Annually
4.3 Required Equipment
Monochrome Monitors for Mammography, display monitor
Serial cable for communicating between PC and display monitor (for ME511L)
USB cable for communicating between PC and display monitor (for other models)
Calibration software (Medivisor Nx)
Calibration sensor (Chroma5)
4.4 Procedure
1. Select “TOTOKU Medivisor Nx” > “ Medivisor Nx” from the Start menu of
Windows. Attach the calibration sensor properly on the monitor to calibrate and
click “Calibration”.

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MQSA Quality Control Manual
2. Usually, you don’t need to change calibration settings. To start calibration, click
“Start”. If you want to change settings, click “Change Settings”
3. If you select “Calibration Settings” at the previous step, refer to the table below
for detail information about each parameter and make necessary changes on
the screen. Click “OK” to return to the previous screen.

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MQSA Quality Control Manual
Setting Explanation
Maximum Luminance
The target brightest luminance. Use the default value of
410 cd/m2 or 500 cd/m2 (display’s factory default) unless
otherwise necessary.
Important: Maximum luminance is settable within
the range specied on the wizard. However, due to
luminance degradation caused by deterioration of
the backlight, the result may fall short of the target
luminance.
Minimum Luminance The target darkest luminance. Use the default value of 0.8
cd/m2unless otherwise necessary.
Ambient Light
The effects of ambient light. Enter the value only if it
is known, otherwise leave it as is.
Hint:The current ambient light can be measured by
clicking the Measure button. (Except for ME511L)
Gamma Setting Gamma setting should be DICOM GSDF
(Recommended)
Comment Add a comment at the time of adjustment for later
reference. This can be left blank.
4. Record the Gamma setting, max. luminance, min. luminance and ambient light
(optional) value of each display set at on the Form 4 in this manual.

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MQSA Quality Control Manual
5. When calibration is completed, the “Finishing Calibration” window is displayed
with the results. Click “Show Details” to display graphical outputs.

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MQSA Quality Control Manual
Form 4: Display Calibration
Annually
Location Name:
Address:
Monitor Serial #1:
Monitor Serial #2:
Test Display #1 Display #2
Setting Result Setting Result
Conguration
Gamma
Max. Luminance cd/m2cd/m2cd/m2cd/m2
Min. Luminance cd/m2cd/m2cd/m2cd/m2
Ambient Light cd/m2cd/m2cd/m2cd/m2
(Pass or Fail)
Testing Person Name:
Signature:
Date: