Inobitec DICOM Viewer

5.6. Markers

5.6.1 General

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Functionality is available in the Pro edition
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A marker is a point, line or polygonal line in space associated with the model. The Viewer allows you to display the length of the marker line and the polygonal marker line and the angles of the polygonal marker line.

The following tools are used to add markers Marker, Line marker and Polygonal Line marker. To select one of this tools, click on the arrow on the right side of the tool selection button. The button will look different depending on the selected tool:

PIC Marker (selected by default)
PIC Line marker
PIC Polygonal Line marker

To activate or deactivate the tool that is currently selected, just click on the left side of the tool selection button. If some tool is activated, the button is highlighted.

The added markers are located in the displayed slice.

5.6.2 Add Markers

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Functionality is available in the Pro edition
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To add a marker as a point:

  1. Activate the Marker tool by clicking the PIC button on the toolbar.
  2. Mark a place on an image by clicking the left mouse button. The marker will appear in all three windows.

After adding all markers, deactivate the Marker tool.

This tool is also available from the image context menu and from the MPR main menu item.

5.6.3 Add Line Markers

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Functionality is available in the Pro edition
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To add a Line marker:

  1. Activate the Line marker tool by clicking on the PIC button on the toolbar.
  2. Click the left mouse button on the image to mark the first point.
  3. Move the cursor over the screen to find the second point.
  4. Click the left mouse button to fix the current point. The line marker will appear in all three windows.
  5. To cancel an incomplete adding, press Esc.

After adding all line markers, deactivate the Line marker tool.

This tool is also available from the image context menu and from the MPR main menu item.

5.6.4 Poilygonal Marker line

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Functionality is available in the Pro edition
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To add a Poilygonal Marker line:

  1. Activate the Polygonal Line marker tool by clicking on the PIC button on the toolbar.
  2. Mark a point by clicking the left mouse button.
  3. Repeat the previous steps until the last but one point is fixed.
  4. Fix the last point by right-clicking the mouse.
  5. To cancel an incomplete adding, press Esc.

After adding all polygonal line markers, deactivate the Polygonal Line marker tool.

To continue the polygonal marker line, move the cursor to the end point of the line, right-click and select the Continue line item.

This tool is also available from the image context menu and from the MPR main menu item.

5.6.5 Actions with Markers

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Functionality is available in the Pro edition
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Actions with markers are performed only if any tool for creating markers is activated. The following actions are available:

  • Drag point or line and polygonal line marker points. Locate the cursor on the marker or point, so that it would look like PIC , and drag it holding the left mouse button. The location of the marker will change accordingly in all windows. The marker will be moved parallel to the displayed slice.
  • Remove. Locate the cursor on the marker, so that it would look like PIC , right-click the mouse and select the Remove marker item.
  • Remove all markers. If you need to delete all markers, locate the cursor on any marker so that it would look like this: PIC , right-click the mouse and select the Remove all markers item, or select the corresponding item from the Marker tool menu.

5.6.6 Marker Properties

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Functionality is available in the Pro edition
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You can set the following properties:

  • Text;
  • Diameter or Line width;
  • Color;
  • Show length (for Line Markers);
  • Show angle (for Polygonal Line Markers).

To set properties for an already added marker, activate any tool for adding markers, locate the cursor over the marker, right-click and select the Set marker properties... item.

To set the default marker properties, click the arrow on the right side of the Marker button and select one of the Set Default Marker Properties..., Set default marker line properties... or Set default marker polygonal line properties... items.

5.6.7 Position of Markers in Space

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Functionality is available in the Pro edition
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If the marker is in or near the current slice, it is displayed as a circle, otherwise it is displayed as a ring with a dot in the center. The further the marker slice is from the current slice, the darker the marker is.

You can determine how is marker line located relative to the plane of the current image by the color of the marker line. The line (or its part) located in front of the plane is brighter than the line (part) behind the plane. In Fig. 5.8 bottom part of the line is located behind the image.