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Version: Version 3.0 ๐Ÿšง


The four main components of the toolbar are:



This section displays all the available tools inside the mode.

Measurement tools#

The basic viewer comes with the following default measurement tools:

  • Length Tool: Calculates the linear distance between two points in mm
  • Bidirectional Tool: Creates a measurement of longest diameter (LD) and longest perpendicular diameter (LPD) in mm
  • Annotation: Used to create a qualitative marker with a freetext label
  • Ellipse: Measures an ellipical area in mm2 and Hounsfield Units (HU)

When a measurement tool is selected from the toolbar, it becomes the active tool. Use the caret to expand the measurement tools and select another tool.



The Window/Level tool enables manipulating the window level and window width of the rendered image. Click on the tool to enable freeform adjustment, then click and drag on the viewport to freely adjust the window/level.

Click on the caret to expand the tool and choose from predefined W/L settings for common imaging scenarios.


Pan and Zoom#

With the Zoom tool selected, click and drag the cursor on an image to adjust the zoom. The magnification level is displayed in the viewport.

With the Pan tool selected, click and drag the cursor on an image to adjust the image position.

Image Capture#

Click on the Camera icon to download a high quality image capture using common image formats (png, jpg)


In the opened modal, the filename, image's width and height, and filetype and can be configured before downloading the image to your local computer.


Layout Selector#

Please see the Viewport section for details.

More Tools Menu#

  • Reset View: Resets all image manipulation such as position, zoom, and W/L
  • Rotate Right: Flips the image 90 degrees clockwise
  • Flip Horizontally: Flips the image 180 degrees horizontally
  • Stack Scroll: Links all viewports containing images to scroll together
  • Magnify: Click on an image to magnify a particular area of interest
  • Invert: Inverts the color scale
  • Cine: Toggles the Cine player control in the currently selected viewport. Click the x on the Cine player or click the tool again to toggle off.
  • Angle: Measures an adjustable angle on an image
  • Probe: Drag the probe to see pixel values
  • Rectangle: Measures a rectangular area in mm^2 and HU

When a tool is selected from the More Tools menu, it becomes the active tool until it is replaced by clicking on a different tool in the More Tools menu or main toolbar.

Overview Video#

An overview of tool usage can been seen below: