Inobitec DICOM Viewer

6.6. Union, subtraction and intersection of the structures

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Functionality is available in the Pro edition
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This tool allows you to create the unions, intersections and subtractions of the structures. The button will look different depending on which instrument was last used:

PIC Union segmented structures (selected by default)
PIC Subtract segmented structures
PIC Intersect segmented structures

To use a tool that is already selected, simply click on the left side of the tool buttons. To select another tool, click on the arrow on the right of the button and select the appropriate item in the list.

6.6.1 Union

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Functionality is available in the Pro edition
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Unification of structures is the addition of one structure to another. The added structure remains unchanged. To unite structures:

  1. Select the current structure on the Segmented Structure Panel (e.g., the left lung).
  2. Click on the Union segmented structures PIC button. The dialog box, shown in Fig. 6.9, will be displayed.
  3. Select the structure to merge with the current one. (e.g., the right lung). If you want to make right lung invisible after merge, check the Hide selected segmented structure box. To make it visible later, check the Visible box for this structure.
  4. To merge, click OK, to cancel, click Cancel.

After combining the original structure will consist of the tissues contained in both structures.



6.6.2 Subtraction

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Functionality is available in the Pro edition
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Subtraction structures is the removal of original tissue structure present in the other structure. To subtract the structures:

  1. Select the current structure on the Segmented Structure Panel (e.g., the lungs).
  2. Click on the Subtract segmented structures PIC button. The dialog box, similar to the one shown in Fig. 6.9, will be displayed.
  3. Select the structure you want to subtract from the current one (e.g., the rigth lung). If you want to make right lung invisible after subtraction, check the Hide selected segmented structure box. To make it visible later, check the Visible box for this structure.
  4. To subtract, click OK, to cancel, click Cancel.

After subtracting the right lung tissue will be removed from the original structure (Lungs).

6.6.3 Intersection

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Functionality is available in the Pro edition
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Intersection of structures is the removal from the one structure of all tissues, except those present in both structures. To intersect structures:

  1. Select the current structure on the Segmented Structure Panel.
  2. Click on the Intersect segmented structures PIC button. The dialog box, similar to the one shown in Fig. 6.9, will be displayed.
  3. Select the structure you want to intersect with the current one. If you want to make the second structure invisible after intersection, check the Hide selected segmented structure box. To make it visible later, check the Visible box for this structure.
  4. To intersect, click OK, to cancel, click Cancel.

After intersection the current structure will consist of the tissues contained in both structures simultaneously.