Managing Images on the Web Viewer

There are many tools available on the web viewer main page that can be used to manage images. Hovering the cursor over certain areas of the page will reveal hidden tools as well as clicking on the mouse button controls. Different methods of managing images are also available on touch-enabled devices.

• Window/Level
• Flipping or Rotating the Image
• Image Zooming and Panning
• Grayscale Invert
• Scrolling Through a Series
• Image Localizer
• Orientation Markers
• Linking Images
• Report Panel
• Returning to Series Viewing Area

Web Viewer Basics

Window/Level

The numbers located at the top right of an image are the Window and Level of an image.  To change the window/level right click on the image and move the mouse forwards or backwards.

For touch-enabled device, drag your finger left/right or forward/backward to change window/level. Double click on the image to return it to it's original window/level.

Flipping or Rotating the Image

To rotate the image:

1. Hover over the top or bottom left corner of the image

2. Click and drag over the hidden control to rotate the image

To flip an image up and down:

1. Hover over the top or bottom right corner of the image

2. Double click the hidden control   to flip the image

To flip an image left to right:

1. Hover over the left or right side of the screen

2. Double click the hidden control to flip the image

For touch-enabled devices:

• Use finger to rotate image
• Double tap on same area described above to flip image

Image Zooming and Panning

To zoom on an image:

1.  Hold down both mouse buttons
2. Drag up or down to enlarge or shrink image

To move an image in the viewing area:

1. Apply a zoom on the image

2. Left click to hold and drag the image

On touch-enabled devices:

• Pinch fingers together or apart to zoom in/out

• After applying a zoom, use two fingers to pan image

Grayscale Invert

To convert an image to Grayscale, double right click on the image.

Normal:                                                                  Grayscale:

Grayscale is currently unavailable on touch-enabled devices.

Scrolling Through a Series

There are two ways to scroll through a series:

• Using a three-button mouse with a wheel spin the wheel forward or backward to scroll through the images
• Hover the left or right side of the screen to reveal a hidden scroll icon
• Click and drag the left mouse button over the icon to scroll through a series

Image Localizer

To display the image localizer, hover over the left or right side of the screen and to reveal image controls.  

The   instructs the user to double click to reveal the image localizer:

The Select control instructs the user to click once on the localizer image to select different localizer image:

An overlay will appear with the different image planes:

Select on the desired image to change the localizer image on the main viewing page.

Orientation Markers

Orientation markers indicate the position of the imaged body and will appear in the center of each side of the image. Letters are used to indicate the orientation of the image.  

• A - Anterior (or front)
• F - Foot
• H - Head
• L - Left
• R - Right
• P - Posterior
• ? - Unknown*

*When the image object does not provide enough information for eRAD PACS to accurately determine this information, no orientation is provided and a ? will appear in place of the orientation marker.

Linking Images

When 2 or more images are open in the viewer main page, the Toggle Series Linking icon appears. Select the icon on all the series to perform certain functions for all images. The icon will appear highlighted for all linked series.

Functions that can be linked include:

• Rotating an image
• Flipping an image
• Panning on the image
• Moving the image on the screen

Report Panel

To display the report, select the Toggle Report Panel   icon.

Returning to Series Viewing Area

To return to the main series viewing page or worklist:

• Select the Back/Close icon (select again from Series viewing area to return to worklist)

• Hover the upper right or left corner to reveal a hidden icon