Transcript
Getting started guide
IMPAX Volume Viewing MIP/MPR This guide outlines the basic steps to perform multi-planar reconstructions (MPRs) and maximum intensity projections (MIPs) of volumetric image data using IMPAX Volume Viewing. MPR/MIP can be used to reconstruct volumetric image data with any obliquity in any plane. Manipulating the crosshairs Left mouse click anywhere on an MPR viewport to move the crosshairs to that location. The orthogonal MPRs will be updated accordingly. You can also move the crosshairs by clicking and dragging the center of the crosshairs. Notice how the mouse cursor changes when positioned over the center of the crosshairs.
The crosshair gap size can be adjusted with the slider in the top toolbar.
The crosshairs can be be shown or hidden by pressing X on the keyboard, or by clicking the crosshair button in the top toolbar. The default gap size can be set with the IMPAX Volume Viewing configuration tool. To shift one of the crosshairs, position the mouse cursor over it between the inner end and the middle of a crosshair line and click & drag the crosshair. Notice how the mouse cursor changes when positioned over the crosshair.
To create an oblique (or double oblique) reconstruction, you can rotate the crosshairs in one or more planes. Position the mouse cursor over the side of a crosshair between the middle and the outer end of a crosshair line and click & drag to rotate.
IMPAX Volume Viewing 2.2
LiveLink Node ID 36555533
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Window/leveling To adjust the window / level in a particular viewport, click & drag the middle mouse button (scroll wheel). While changing the window level, the center and width values are displayed in the bottom status toolbar. Other MPR viewports will update their W/L setting to the new values when the middle mouse button is released. Window/level presets can be assigned to the keyboard function keys (F1 – F12) for both CT and MRI datasets. Defaults (the same as in IMPAX) have been predefined for both CT and MRI series. To access the window level shortcut configuration dialog, select the Window level tool from the top toolbar. To define a new window/level shortcut, select a line in the table, fill in a name, width and center values. Then click Apply to save. In IMPAX Volume Viewing MIP/MPR, there are two axial MPR viewports. A different window/level can be set for both these viewports. Select a different screen layout via the Layout menu in the top toolbar.
IMPAX Volume Viewing 2.2
LiveLink Node ID 36555533
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Scrolling, zooming, panning, etc… To scroll through MPR slices: • click & drag on that viewport, • use the mouse scroll wheel or • use the up/down arrow keys. • click & drag the corresponding crosshair line in one of the other MPR views To zoom or pan, activate zoom mode (via the top toolbar, in the right-mouse-click menu or by pressing ‘z’ on the keyboard). Then use the mouse scroll wheel to zoom (on the centre of the crosshairs) or click & drag to pan. Notice the zoom/pan modes are indicated by the mouse curser. Exit zoom mode with a rightmouse-click.
All MPR views will zoom simultaneously. Panning only applies to the currently selected MPR view. To change the MPR slice orientation in a particular viewport, select that orientation from the viewport toolbar, or use a keyboard shortcut to go to Axial (A), Coronal (C) or Sagittal reformat (S). To change the slice thickness, move the thickness slider in the viewport toolbar, or press a number on the keyboard for slice thicknesses between 0 (minimum) and 9 mm. Slice thickness Projection mode
Slice orientation
To change the projection mode, select it from the viewport toolbar. The following projection modes are available: • MIP: maximum intensity projection • MINIP: minimum intensity projection • AVGIP: average intensity projection Double click on any viewport to go to a large or full-screen view. Press the Reset button in the top toolbar to undo all changes to zoom, pan, window/level, and so on.
IMPAX Volume Viewing 2.2
LiveLink Node ID 36555533
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Image markups Markups are available from a drop down menu in the top toolbar. Angle Arrow Distance Ellipse Polygon Text Delete markup
IMPAX Volume Viewing 2.2
LiveLink Node ID 36555533
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