XERO is the name of the software that the Alberta Netcare Diagnostic Image (DI) Viewer was constructed with. When you are in the DI Viewer and click on help you may find “XERO” referenced in the documentation.

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The layout button on the toolbar at the top of the Image pane indicates the currently selected layout. Click the button to view the options available and select the required layout. For instance, to view a single image, select a 1x1 layout and to view four images, select a 2x2 layout. These options are limited by the number of images included in the study. For more information, refer to Beyond the basics: How do I compare two images?.

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1. Move the mouse pointer to the top-left corner of the pane that contains the image to magnify. A toolbar appears.
2. From that toolbar, click Zoom/Pan.
3. To magnify the image, click Zoom in or scroll the mouse wheel upwards.

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1. Move the mouse pointer to the top-left corner of the pane that contains the image. A toolbar appears.
2. From that toolbar, click Adjust Brightness/Contrast.
3. To make the image brighter, drag the mouse pointer down over the image.
4. To make the image darker, drag the mouse pointer up over the image.
5. To increase the image contrast, drag the mouse pointer to the right.
6. To decrease the image contrast, drag the mouse pointer to the left.

For more information, refer to Beyond the basics: What is Window Level?.

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You can navigate images using either your wheel mouse, or the on-screen slider bar below each image.

To use your wheel mouse, hover your mouse pointer over the stack of images you want to navigate. Scroll your mouse wheel to navigate through the images.

Use the slider to:

• Navigate by one image at a time.
  Click the arrow buttons beside the slider at the bottom of the image to move to the next image.
• Jump to a specific location in the stack.
  Click anywhere on the slider. You are moved to that position in the image stack. You can then use the arrow buttons or the mouse wheel to fine tune to the required image.
• Have the system automatically navigate through the image stack.
  Click and hold down either of the arrow buttons for a few seconds until auto-navigation begins. Release the mouse button.
  To stop auto-navigation, click the arrow button or anywhere in the navigation bar.

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1. Move the mouse pointer to the top-left corner of the pane that contains the image and a toolbar appears.
2. From that toolbar, click Magnify/Pan Reset, the last button on the toolbar, to reset the magnification only.
3. If other modifications have been made, to revert all changes, click Reset, the first button on the toolbar.

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Using the Markup Caliper, you can measure the distance between two points on an image.

1. Move the mouse pointer to the top-left corner of the pane that contains the image. A toolbar appears.
2. From the toolbar click Markup Caliper.
3. Click the start and end points of the area to measure or click-and-drag to select the area to measure.
4. For calibrated images, the distance between the two points is displayed in millimeters (mm). Otherwise it is displayed in image pixels (px).

The measurement appears only on the image it is drawn on, not on all images in the group. This measurement cannot be saved so when you close or log out of IDCV XERO, the information is lost. To remove the measurement click Reset Markup Caliper.

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In the Display Area of the DI Viewer, click on the Options button. The report, if available, will be listed under “Documents”.

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1. In the Display Area of the DI Viewer, click on the Options button.
2. The available layout options appear in the list under “Layout”
3. Select the required layout. The study images display in the layout format you select.

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You can compare images from the same study or images from two different studies.

1. If two exams are selected for a comparison, the images from each exam are displayed in separate panes. To view the images from the same exam in a dual pane, click Compare Studies (2 up)  in the top right corner of the pane.
2. To display just the images to be compared, change the layout in each pane.
3. Optionally, using the arrows or the mouse wheel, navigate to the required image in each pane.
4. To change the image display for comparison, magnify or adjust the brightness and contrast of the images.

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Window level is a term used in medical imaging to refer to changing the contrast between light and dark areas of an image or the overall brightness of an image by moving the mouse. In window level, window refers to the range of intensities from light (white) to dark (black) so it controls the brightness of an image. Level refers to the intensity of that shade, thus affecting the contrast. The ability to window level is useful when viewing almost any image.

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Shortcut keys can be used to quickly accomplish tasks you perform frequently.

Action	Shortcut
Reset only the brightness and/or contrast without resetting other modifications such as zoom	Press Shift + Click
Zoom into the image	Scroll mouse wheel up
Zoom out of the image	Scroll mouse wheel down
Pan an image	Press Ctrl + Drag
Reset image zoom or pan without resetting other modifications such as brightness and contrast changes	Press Ctrl + Click
Fast navigate a group of images	Press Shift + Scroll mouse wheel
Toggle display of an image between a 1x1 layout and the previously selected layout	Double-click the image
Measure a distance on an image using the Markup Caliper	Press Alt + Drag
View XERO in full screen mode	Press F11

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Prepared Views display a set of markups made by radiologists. These markups can include grayscale transformations, annotations, rotations, and flips. The goal is to highlight an area of an image or to ensure that the display of an image is consistent when displayed on-screen.

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In the Alberta Netcare Clinical Document Viewer, the reports and images are sorted by date, with the results of most recent exam displayed first.

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Calibrated images are measured in millimeters. Non-calibrated images are measured in pixels. The accuracy of the measurements is affected by the accuracy of calibration (if provided) and the accuracy of the start and end points of the drawn line. The start and end points may each vary by one pixel. Each pixel is rounded to the nearest millimeter. 

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