ViewIQHelp Archives - MyXrayDose https://myxraydose.com/docs/viewiqhelp/ Mon, 02 Dec 2024 03:11:11 +0000 en-US hourly 1 https://i0.wp.com/myxraydose.com/wp-content/uploads/2020/01/cropped-My_Xray_Dose_Favicon-32x32-1.png?fit=32%2C32&ssl=1 ViewIQHelp Archives - MyXrayDose https://myxraydose.com/docs/viewiqhelp/ 32 32 167553530 Upgrading ViewIQ https://myxraydose.com/docs/upgrading-viewiq/ https://myxraydose.com/docs/upgrading-viewiq/#respond Mon, 02 Dec 2024 02:51:10 +0000 https://myxraydose.com/?post_type=docs&p=6763 Uninstalling the old ViewIQ version In the Windows search bar, type “Add or remove programs” and open these settings Search for ViewIQ Click on the three dots and then select Uninstall The ViewIQ uninstaller should now open  Follow the instructions, but when the following window opens, select Yes (it may be hidden behind the installer […]

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Uninstalling the old ViewIQ version

  1. In the Windows search bar, type “Add or remove programs” and open these settings
  2. Search for ViewIQ
  3. Click on the three dots and then select Uninstall
  4. The ViewIQ uninstaller should now open 
  5. Follow the instructions, but when the following window opens, select Yes (it may be hidden behind the installer window)
  6. This ensures that the previous configuration is fully removed before installing the new version
  7. Complete the uninstallation 

Installing the new version of ViewIQ

  1. Run the ViewIQ-Setup-x.x.x.exe installer
  2. Follow all instructions
  3. When the installer closes, run ViewIQ from the newly created desktop icon 

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]]> https://myxraydose.com/docs/upgrading-viewiq/feed/ 0 6763 Adjusting calibration settings https://myxraydose.com/docs/adjusting-calibration-settings/ https://myxraydose.com/docs/adjusting-calibration-settings/#respond Thu, 14 Mar 2024 15:50:46 +0000 https://myxraydose.com/?post_type=docs&p=6284 Overview Calibration settings can be changed under the Settings > Measurement Settings tab: Here you can adjust various factors that influence calibrations such as: Sample count (for greater accuracy) CIE D65 colour calibration Minimum and maximum luminance targets Colour dithering Sample count The number of calibration samples impacts the time taken to complete calibration as well […]

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Overview

Calibration settings can be changed under the Settings > Measurement Settings tab:

Here you can adjust various factors that influence calibrations such as:

  1. Sample count (for greater accuracy)
  2. CIE D65 colour calibration
  3. Minimum and maximum luminance targets
  4. Colour dithering

Sample count

The number of calibration samples impacts the time taken to complete calibration as well as the accuracy of the final calibration applied. Using a larger number of samples for Calibration Points may help to reduce GSDF. For most purposes, using 52 or 64 samples is optimal.

Note: For maximum GSDF accuracy, 1786 calibration points can be used. However, to select this option, colour calibration must be disabled, dithering mode set to partial or full, and LUT bit depth to be set to 8-bits

The sample count for the check phase of the calibration should be set to 18 to for valid GSDF values.


CIE D65 Colour Calibration

To enable CIE D65 color calibration for your monitor,  toggle the CIE D65 colour calibration option. This will be applied on the next calibration that is run. 

Enabling this option may reduce the maximum luminance for your display to below what it is capable of, as some tradeoffs have to be made to correct for colour. If your display no longer meets the luminance requirement for your selected standard after applying colour calibration, it is recommended you disable this option. This setting is also not compatible when a dithering mode is selected.


Luminance Targets

All radiology display standards have requirements for minimum and maximum luminance. By default, ViewIQ will target a minimum luminance of 1 cd/m2 and use the maximum luminance your display is capable of. This should allow for most standards to be met without having to make any changes (assuming that your display hardware is capable of meeting the standard). 

However, you might want to adjust these targets to preserve your display (by reducing maximum luminance to that of the standard being used) or when using a custom standard. To set the minimum and maximum luminance enter your values into their respective fields and run a calibration:


Colour Dithering

GSDF can be further improved when colour channels are individually incremented, as this allows the calibration to make use of a greater range of luminance values. To enable dithering, expand Advanced Options

Then from the colour dithering drop down, select Partial or Full dithering.

Full dithering may cause unintended results with colour production. If this is experienced, use Partial dithering instead.

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]]> https://myxraydose.com/docs/adjusting-calibration-settings/feed/ 0 6284 Illuminance, Ambient Luminance & Uniformity https://myxraydose.com/docs/illuminance-ambient-luminance-uniformity/ https://myxraydose.com/docs/illuminance-ambient-luminance-uniformity/#respond Thu, 14 Mar 2024 15:49:50 +0000 https://myxraydose.com/?post_type=docs&p=6301 Many standards require multiple types of measurements for a complete report, such as illuminance or uniformity. Room lighting can also affect the calibration, and can be accounted for by setting ambient luminance. These options are available under each display: Illuminance Illuminance is the amount of light that falls on a surface per unit area. Many […]

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Many standards require multiple types of measurements for a complete report, such as illuminance or uniformity. Room lighting can also affect the calibration, and can be accounted for by setting ambient luminance. These options are available under each display:


Illuminance

Illuminance is the amount of light that falls on a surface per unit area. Many standards require this to be below a certain threshold. To measure illuminance, place your photometer on the screen with the lens pointing outward and the diffuser covering the sensor:

Click Measure Illuminance to take a reading, which will then be displayed in the Lux tile:


Ambient Luminance

To set ambient luminance for a display, click on the edit icon in the ambient luminance tile:

A popup will appear, where the value can be set:

For an accurate measurement using a photometer, it is recommended to:

  1. Turn off the display for which ambient luminance is being measured (two or more displays are needed)
  2. Ensure the diffuser is not covering the sensor
  3. Hold the photometer in approximately the same location as where an observer would be looking from
  4. Face the sensor toward the display and click Measure to take a reading

The ambient luminance field will be updated with your measurement


Uniformity

To measure uniformity, click Measure Uniformity. The following window will open:

With your photometer ready, place the sensor within the circle of the light gray box and click OK to start. When each reading is taken, move the sensor to the next circle and repeat (readings will be taken automatically). After the last reading is taken the window will close, and the value can be found under the Uniformity tile

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]]> https://myxraydose.com/docs/illuminance-ambient-luminance-uniformity/feed/ 0 6301 Using your web account https://myxraydose.com/docs/using-your-web-account/ https://myxraydose.com/docs/using-your-web-account/#respond Wed, 02 Nov 2022 04:43:54 +0000 https://myxraydose.com/?post_type=docs&p=5587 Logging In To log into your ViewIQ account, visit https://myxraydose.com/my-account/ Enter your credentials or create a new account. Upon logging in, you will be greeted by the dashboard: Here you can view the status of your subscription. If you do not yet have a subscription, or wish to purchase another copy of ViewIQ, you can do […]

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Logging In

To log into your ViewIQ account, visit https://myxraydose.com/my-account/

Enter your credentials or create a new account. Upon logging in, you will be greeted by the dashboard:

Here you can view the status of your subscription. If you do not yet have a subscription, or wish to purchase another copy of ViewIQ, you can do this by visiting the Shop

Viewing Status Updates

ViewIQ regularly sends updates to the website on startup or login. These contain information on the success or failure of applying calibration look-up-tables, the state of monitor settings (whether or not a user has adjusted these), as well as notifying of any driver version changes. To view these updates, visit the Status Report section

To view additional information, click on the link for a computer:

Any errors encountered by that workstation will be included in the log.

Managing Licenses

You can view all of your licenses and their status under Manage Licenses

Here you can see which licenses are active, when they were activated and how the calibration and user check reminders are configured. To set calibration and check reminders, click Click to define

When a new license is added or has been freed, it will appear in the list with License available, click here to activate

To activate a free license, simply enter the license key in the ViewIQ software. Subscriptions will be automatically detected. 

Visit the License Management help section for information on freeing up an existing license for use on another workstation. 

Viewing Calibration Results

Calibration history across all workstations can be viewed under Calibration Results. This only includes uploaded results.


Reviewing User Checks

User visual checks history can be seen under User Check Data

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]]> https://myxraydose.com/docs/using-your-web-account/feed/ 0 5587 Licence Management https://myxraydose.com/docs/licence-management/ https://myxraydose.com/docs/licence-management/#respond Wed, 02 Nov 2022 04:43:06 +0000 https://myxraydose.com/?post_type=docs&p=5585 Activating your license 1. To active your license, open the active license window by clicking on the button in the top right of the main window: 2. You can activate your license either by entering your username and password or using a license key: 3. For a license key, copy and paste your key into […]

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Activating your license

1. To active your license, open the active license window by clicking on the button in the top right of the main window:

2. You can activate your license either by entering your username and password or using a license key:

3. For a license key, copy and paste your key into the activation key field and click Activate.  If using your username and password, enter them in their respective fields and click Get next available license

4. If successful, your copy will now be licensed: 


Checking license status

1. To check the status of your license, navigate to the Settings > License tab

2. Click Check license active. 

Deactivating your license

  1. To deactivate your license navigate to the Settings > License tab

2. Click Release License to deactivate

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]]> https://myxraydose.com/docs/licence-management/feed/ 0 5585 Appendix https://myxraydose.com/docs/appendix/ https://myxraydose.com/docs/appendix/#respond Wed, 02 Nov 2022 04:42:41 +0000 https://myxraydose.com/?post_type=docs&p=5583 References Display Quality Assurance The Report of AAPM Task Group 270 January 2019 DICOM PS3.14  – Grayscale Standard Display Function RANZCR-Standards of Practice for Clinical Radiology V11 ACR–AAPM–SIIM Technical Standard for Electronic Practice Of Medical Imaging RCR-Standards for interpretation and reporting of imaging investigations Luminance and illuminance Luminance and illuminance are both measures of light, […]

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References

  1. Display Quality Assurance The Report of AAPM Task Group 270 January 2019
  2. DICOM PS3.14  – Grayscale Standard Display Function
  3. RANZCR-Standards of Practice for Clinical Radiology V11
  4. ACR–AAPM–SIIM Technical Standard for Electronic Practice Of Medical Imaging
  5. RCR-Standards for interpretation and reporting of imaging investigations

Luminance and illuminance

Luminance and illuminance are both measures of light, but they describe different aspects of it. Luminance is a measure of the amount of light that is emitted or reflected from a surface, and is typically measured in units of candelas per square meter (cd/m2). Illuminance, on the other hand, is a measure of the amount of light that falls on a surface, and is typically measured in units of lux (lx). Luminance is a directional measure, while illuminance is an averaged measure. In summary, luminance describes the amount of light coming from a source, while illuminance describes the amount of light received by a surface.

CIE D65

The CIE D65 standard, also known as the CIE Standard Illuminant D65, is a standard illuminant used in colorimetry to represent average daylight. It is one of the standard illuminants used in the CIE 1931 color space, which is a color space used to describe the colors visible to the human eye.

The CIE D65 standard is defined by the CIE as a spectral power distribution with a correlated color temperature of 6500 Kelvin. It is designed to represent the average daylight spectrum at noon on a clear day, with a slight adjustment to the blue region of the spectrum to match the average daylight spectrum at sea level in Western Europe.

The CIE D65 standard is widely used in a variety of applications, including photography, graphic design, and television and film production. It is also used in color management systems to ensure that colors are reproduced accurately across different devices and mediums.

DICOM Part 14  GSDF

DICOM Part 14: Grayscale Standard Display Function: The Grayscale Standard Display Function (GSDF) is a mathematical function defined in the DICOM Part 14 standard that specifies how digital grayscale images should be displayed. The GSDF is used to ensure that grayscale images are displayed consistently across different devices, such as monitors and printers, and that the luminance values of the pixels in the image are accurately represented.

The GSDF is an important part of the DICOM standard, as it ensures the accurate and consistent display of grayscale images.

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]]> https://myxraydose.com/docs/appendix/feed/ 0 5583 Information Tabs & Graphs https://myxraydose.com/docs/information-tabs-graphs/ https://myxraydose.com/docs/information-tabs-graphs/#respond Wed, 02 Nov 2022 04:41:21 +0000 https://myxraydose.com/?post_type=docs&p=5581 Luminance Luminance is the luminous intensity per unit area projected in a given direction measured in cd/m2 The luminance graph consists of three sets of data: Measured luminance before applying calibration (purple) Calculated target luminance (green) Measured luminance after applying calibration (teal) The number of samples for both sets of measured points can be adjusted […]

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Luminance

Luminance is the luminous intensity per unit area projected in a given direction measured in cd/m2

The luminance graph consists of three sets of data:

  1. Measured luminance before applying calibration (purple)
  2. Calculated target luminance (green)
  3. Measured luminance after applying calibration (teal)
The number of samples for both sets of measured points can be adjusted in the settings under Measurement Settings


Contrast Response

JND (Just-Noticeable Difference)

Just-Noticeable Difference is the luminance difference of a given target under given viewing conditions that the average human observer can just perceive.

Colour Accuracy

The colour accuracy graph plots the deviation in chromaticity coordinates from the measured value relative to the ideal value. The closer the points fall to the center of the X the more colour accurate the display is. 

The graph plots two datasets:

  1. Measured chromaticity deviation before calibration is applied (purple)
  2. Measured chromaticity deviation after calibration is applied (teal)

In the below image the colour accuracy setting is disabled. This can be toggled in Settings > Measurement Settings

Colour calibration enabled:

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]]> https://myxraydose.com/docs/information-tabs-graphs/feed/ 0 5581 Performing a Calibration https://myxraydose.com/docs/performing-a-calibration/ https://myxraydose.com/docs/performing-a-calibration/#respond Wed, 02 Nov 2022 04:39:02 +0000 https://myxraydose.com/?post_type=docs&p=5579 Calibrating a Display To calibrate a display, first identify the monitor you wish to calibrate. When you click on a display in the list, an overlay will be displayed on the corresponding monitor. To identify all displays at once, press Identify Displays.  Ensure an OEM X-Rite photometer is connected. Then place the photometer sensor (glass […]

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Calibrating a Display

To calibrate a display, first identify the monitor you wish to calibrate. When you click on a display in the list, an overlay will be displayed on the corresponding monitor. To identify all displays at once, press Identify Displays. 

Ensure an OEM X-Rite photometer is connected. Then place the photometer sensor (glass side) down in the center of the selected display, hanging the counterweight over the backside of the monitor. Ensure the diffusor cover is not over the sensor.

Press Start Calibration to begin calibrating the display, this may take a few minutes depending on the selected number of samples. Ensure the photometer remains steady throughout the process for optimal results. 

Once the calibration is finished, the window will automatically close and the results will be displayed:


Using your Results

After one or more calibrations have been completed, you can use these results in various ways. To generate a PDF report of the current calibration status of your display setup, click Print Report.

If you have a ViewIQ website subscription, you can also upload the results of each calibration to the website. 

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]]> https://myxraydose.com/docs/performing-a-calibration/feed/ 0 5579 FAQs https://myxraydose.com/docs/troubleshooting/ https://myxraydose.com/docs/troubleshooting/#respond Wed, 02 Nov 2022 04:38:22 +0000 https://myxraydose.com/?post_type=docs&p=5577 Does ViewIQ run on Mac or Linux? ViewIQ is only supported on Windows currently.

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Does ViewIQ run on Mac or Linux?

ViewIQ is only supported on Windows currently.

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]]> https://myxraydose.com/docs/troubleshooting/feed/ 0 5577 Installing ViewIQ & Running Calibration https://myxraydose.com/docs/installation-setup/ https://myxraydose.com/docs/installation-setup/#respond Wed, 02 Nov 2022 04:34:15 +0000 https://myxraydose.com/?post_type=docs&p=5575 Download the latest ViewIQ Installer from your Account at https://myxraydose.com/my-account/ Run the ViewIQ-Setup-2.1.9.msi installer. Launch the ViewIQ Application. (Administrator privileges are required) On the first launch of ViewIQ you will be asked to enter: Owner information. Calibration standard to use Use a computer name that lets you uniquely identify which workstation you are calibrating. This […]

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  1. Download the latest ViewIQ Installer from your Account at https://myxraydose.com/my-account/
  2. Run the ViewIQ-Setup-2.1.9.msi installer.
  3. Launch the ViewIQ Application. (Administrator privileges are required)
  4. On the first launch of ViewIQ you will be asked to enter:
    • Owner information.
    • Calibration standard to use
  5. Use a computer name that lets you uniquely identify which workstation you are calibrating.
  6. This information will be present at the top of calibration reports and the selected standard will be used as the criteria for all calibrations that are performed. This can be changed at any time in the settings under Display Standard and Owner Info.
OwnerInfo
  1. Select the appropriate standard
  1. Plug in X-Rite i1Display Pro (1D3 OEM version only) photometer into USB port on computer being calibrated. (Photometer and software license available from https://myxraydose.com/shop/.)
  2. Click Identify Displays to show which display corresponds to which entry in the list
  3. Click on the display that you would like to calibrate and click Start Calibration
  4. Place the glass lens side of the photometer in the center of the black square 
  1. Click Start Calibration and do not move photometer until the window closes
  2. Check results are in tolerance.
  3. Click Measure Uniformity, and follow instructions on the screen
  4. Flip diffuser over so it covers the photometer lens and place on the display facing outwards
  1. Click Measure Illuminance (lux)
  2. If this measurement results in a fail then reduce the room lighting and eliminate sources of light directly reflecting off the display.
  3. Check all measurements pass
  1. Print Report to create PDF for your records
  2. If not already done then Activate license to continue to apply calibrations past trial period.
  3. Click Exit
  4. Ensure the room lighting is maintained at a level appropriate for medical image viewing.

Tip:

The default calibration factors applied presume that the display has minimal reflections from the surface. To minimize reflections the monitor needs to be in a room with subdued lighting and no significant reflections from external windows or other bright light sources in the room.

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