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Table of Content
Mouse Operations
Below is basic information about how to use the three-, two-, and one-button mouse (or trackpad) on Windows, Mac, and Linux platforms to perform basic interaction operations in Slicer:
Cross Reference
Holding down the Shift-Key while moving the mouse in any Slice Viewer will cause other Slice Viewers to scroll to the same position. This feature can be combined with cross-hairs.
Crosshairs
Crosshairs are available for precise cross-correlation between Sliceviewers. Their appearance can be changed. In Navigation mode a box at the center of the crosshair allows to center the other Sliceviewers to that location by clicking and dragging the box.
Window & Level
Left-clicking and dragging the mouse in any Slice viewer is a quick way to adjust Window and Level.
- Adjust the middle value (level) of the greyscale window by moving the mouse up (increase level) or down (decrease level), and adjust the greyscale window size by moving the mouse to the left (decrease window size) or right (increase window size).
- Slicer's Volumes Module provides a "Display" interface for more precise adjustments.
|
 Crosshair-Toolbar A variety of crosshair modes are available in Slicer |
Rotate, Zoom, Pan
| Action
|
3-button
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2-button
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1-button
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1-button Mac
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Trackpad Mac
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| Rotate (3D viewers only)
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Left-click & drag
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Left-click & drag
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Left-click & drag
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Left-click & drag
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Left-click & drag
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| Zoom
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Right-Click & vertical drag
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Right-Click & vertical drag
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Ctrl+Left-Click & vertical drag
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Command+Left-Click & vertical drag
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two-fingers & vertical drag
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| Pan
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Middle-Click & drag
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Shift+Left-Click & drag
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Shift+Left-Click & drag
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Shift+Left-Click & drag
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Shift+Left-Click & drag
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Selecting & Manipulating
Mousing over any "pickable" object in any of Slicer's viewers will cause the cursor to change from a "pointer" into a "picking hand". When the cursor shows a picking hand, left-clicking and dragging the mouse will pick and manipulate the object. Releasing the mouse button will de-select the object.
Mouse Modes
Slicer has two mouse modes: Transform, and Place. The icons in the mouse mode toolbar at the top of the main GUI allow to switch between these mouse modes and to modulate their behavior.
- Transform mode is the default interaction mode. This mode allows interactive rotation (3D viewer only), pan/translation and zoom (see above).
- Place mode allows to place one object then switches modes back to Transform mode. Place mode can be made persistent by clicking the checkbox adjacent to place mode. This allows to place multiple objects (e.g. fiducials).
- Fiducial is the default object in Place mode
- Ruler and Region Of Interest (ROI) Widgets are other available objects in the Place Mode menu.
|
 Mouse Mode Toolbar Transform icon to the left |
Keyboard Accelerators
- On Mac OS X use the Command key (
) instead of the Control (Ctrl) key
- fn-Delete is used for Forward Delete on built-in keyboards of portable Macs
General
| Key
|
Effect
|
| Ctrl+O
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Load a new scene (clears existing scene)
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| Ctrl+A
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Import a scene (does not clear existing scene) Brings up Add Data instead
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| Ctrl+S
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Save a scene
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| Ctrl+W
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Close a scene
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| Ctrl+Z
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Undo the history of undoable commands, from last to first.
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| Ctrl+Y
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Redo the history of undoable commands, from last to first.
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| Ctrl+H
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Set current module to "home" module for easy access.
|
| Space
|
Toggles the display of Slicer's Edit Box.
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| Ctrl+P
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Display the Python console Displays the QT-real console
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| Ctrl+L
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Create a new fiducial list.
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| Ctrl+I
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Toggle between "Persistent Place" and "Transform View" interaction modes.
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| Ctrl+M
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Create a new Ruler measurement between the last two placed fiducials.
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| Ctrl+0
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Display error log.
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| Ctrl+1
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Interface documentation.
|
| Ctrl+2
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Display the Application Settings Interface for customizing Slicer.
|
| Ctrl+3
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Python Interactor.
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| Ctrl+4
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Extension Manager.
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| Ctrl+5
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Toggle Module Panel visible/invisible.
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3D Viewer
| Key
|
Effect
|
| r
|
Fits the cameras field of view to show all that is visible in the viewer
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| w
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Show triangulated surface models as wireframe.
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| s
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Show triangulated surface models as shaded surfaces.
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Slice Viewer
| Key
|
Effect
|
| v
|
Toggles the slice plane visibility in the main 3D Viewer
|
| r
|
Fits the slice view to the volume extents in the active Slice Viewer, or in all viewers if they are linked (the first non-none volume will be used in order of Background, Foreground and Label layers)
|
| b or f
|
Decrease or increase visible slice in the active Slice Viewer (left or down) by one unit of background pixel spacing
|
| ` (back-tick)
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Navigate to next fiducial in the active Slice Viewer, or in all viewers if they are linked (back-tick is the left single-quote on the key with the tilde (~) character in the upper left side of the keyboard)
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| Ctrl+` (back-tick)
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Navigate to next fiducial in all Slice Viewers, independent of their linked state
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| Shift+` (back-tick)
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Navigate to the previous fiducial in the active Slice Viewer, or in all viewers if they are linked
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| Ctrl+Shift+` (back-tick)
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Navigate to the previous fiducial in all Slice Viewers, independent of their linked state
|
| p
|
Place a new fiducial in the active Slice Viewer(adds to the current fiducial list, or creates a list if there are none)
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| Backspace
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When the mouse is hovering over a fiducial in the Slice Viewer (turning it yellow), delete that fiducial
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| (forward)Delete
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When the mouse is hovering over a fiducial in the Slice Viewer (turning it yellow), delete that fiducial
|
Transfer functions
- select a group of control points
- move a group of control points horizontally
- move a group of control points vertically
