Drawing an ellipse markupTopic number: 1425412336377

Use the Ellipse (2-points) markup tool to annotate or measure an elliptical region of interest.

Tip:

Two ellipse tools are available. In addition to the default tool described in the procedure that follows, you can also draw an ellipse defined with three parameters, for more precision.
To draw an ellipse markup
  1. In the Image area top toolbar, click ROI tools > Ellipse (2-points).

    An ellipse appears beside the pointer to indicate that the markup tool is active.

  2. Point to the region of interest and click to place the first handle defining the ellipse.
  3. Move the pointer to enlarge or reduce the ellipse.
  4. Click to place the second handle, completing the ellipse.
  5. Press Esc to deactivate the markup tool.