1. A method for identifying a region of interest within a time sequence of images, comprising: acquiring a time sequence of images comprising a plurality of image frames; performing image segmentation to segment a region of interest (ROI) from within each of the plurality of image frames of the time sequence of images; receiving manual edits to the ROI within one or more of the plurality of image frames; and propagating the manual edits to other image frames of the plurality of images, wherein an extent to which each of the manual edits are propagated to other image frames is dependent upon a distance in time between the other image frames and the frames that have been manually edited.