Deleting an ROI

To delete an ROI:

Click on the Select tool from the ROI toolbar.

Click on the ROI you want to delete.

Press the <Delete> key. 

Tip: You can use the Delete All tool in the ROI toolbar to instantly remove all ROIs defined in the active image.  You can also right-click on the image to reveal the image context menu and use the Delete tool in the image context menu to delete selected ROI(s).