Inobitec DICOM Viewer

8.2. Centerline building mode

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Functionality is available in the separate module which is activated in the Pro edition for an extra fee
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For analysis it is necessary to build a centerline, which is automatically located in the conditional center of the vessel. Only one centerline can be built at a time. To save the built line and build a new one, bind it to a specific vessel from the list in the left part of the window (see Section 8.1.1).

8.2.1 Building the centerline

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Functionality is available in the separate module which is activated in the Pro edition for an extra fee
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You can build the centerline in three methods. To select a method click the arrow on the right side of the New Vessel PIC button and select the appropriate method. The current method is marked by flag.

  1. Building by one point. In this mode the line is built in both directions from the starting point for the maximum distance. If along the way of building the vessel splits, then the line is built in an arbitrary branch. To build, click the left mouse button at the starting point.
  2. Building by two points. In this mode the line is built from the starting to the end point. To build click at the start and end points.
  3. Automatic building by one point. This mode differs from the first one in that the line is built in both directions from the starting point to the bifurcation points, i.e. to the points at which the vessel splits or two vessels converge. To build, click the left mouse button at the starting point.

If the centerline for the selected points cannot be built then the message Centerline building is failed appears.

The Viewer adds the number of intermediate points needed to set the centerline. For more accurate positioning of the line move these points manually with the mouse while holding the left button.

If the line is not completely built then select the point to which you want to resume the line and click in it. The line will be built from the nearest existing point.

If the line is not built correctly then start building it again by clicking on the New vessel PIC button, or delete part of the line. To delete a part of the line, delete a segment. The segment is deleted along with the shorter part of the line adjacent to the point.

To delete a segment right-click on the first point of the segment and select Remove segment item. The shorter part of the centerline is removed from one side of the point and the section between this and the next point from the other side.

To delete a point, move the cursor over this point so that all points are highlighted, right-click and in the context menu select the Remove point command.

To add a point move the cursor to the place where you want to add a point, right-click and in the context menu select the Add point command. The centerline will change in such a way as to pass through a new point.

The initial research data or the volume reconstruction data can be used for building. To select data source click the arrow on the right side of the New vessel PIC button and select the appropriate source.

The centerline is shown in Fig. 8.3.