Region of Interest (ROI) Annotation

When an ROI is selected, you can annotate an ROI with text. To do this, select an ROI, then type the annotation text into the Annotation field: .

Whenever you re-select this ROI, the annotation will appear in the annotation text box. In addition, you can show the annotation on the image adjacent to or in the centre of the ROI by selecting .
Annotation of Rectangular, Elliptical, Irregular, Spline, Hollow and CurvedLine ROIs is shown at the centre location of the ROI. Annotation of Markers is shown just to the top right of the Marker. Annotation of Line ROIs is shown just above and to the right of the centre of the Line. Annotation locations are illustrated below.

Note: When you type in annotation, leading and trailing white space characters (such as " ") will be removed, since they cannot be written safely to the ROI file.

Annotation Sets

If you find yourself working with a limited number of annotations, where ROIs are labelled using one annotation from a set, you may want to set up an Annotation Set. To set up an Annotation Set, select Manage ROI Annotation Sets ... from the File menu of the ROI Toolkit: . This brings up the Manage ROI Annotation Sets dialog:

To create a new new Annotation set, click on the button. This will bring up a dialog for you to enter a name for this new Annotation Set:

Enter the name for this annotation set, and press the button. In this example, we create a set with the name "MS Lesions". Next, the dialog to add annotations to the set will appear:

For each Annotation in the set, enter the ROI Annotation you want to use and press the button. In this example, we have entered three ROI Annotations to be used: 'New', 'Enlarged' and 'Enhancing'. These now appear in the list for this set:

When finished adding Annotations to the set, click the button. These Annotations will now be part of the Annotation Set, and your new Annotation Set will be listed in the Manage ROI Annotation Sets Dialog:

To use this set, make sure it is selected in the list and click the button. You can change the annotation set by clicking on the button, and you can delete the selected Annotation Set by clicking the button. To use the selected set for your current image analysis task, click the button.

When you have selected an ROI Annotation Set to use, the annotation set will appear in the ROI Toolkit Dialog underneath the Annotation field, as a list of Annotations to choose from:

With an ROI selected, choose an Annotation from the drop-down menu, and it will be set for the selected ROI.

To stop using an Annotation Set, bring up the "Manage ROI Annotation Sets" Dialog, select the set called 'None' in the List of sets, and then click the button.