1. A method comprising: receiving a plurality of images that are associated with an identification of a tracking target of a patient to receive radiation treatment; sorting the plurality of images into a sequence based on a motion of the patient, wherein the motion comprises a respiratory motion of the patient; receiving an input selection, via a graphical user interface (GUI), to provide the sorted plurality of images in the sequence that is based on the motion of the patient; causing display of, by a processing device, of the sorted plurality of images, in the sequence, that is based on the motion of the patient in response to the input selection; providing a contour on each of the sorted images to represent the treatment target of the patient that has been identified; providing a visual indicator on each of the sorted images to represent the tracking target of the patient that has been identified; receiving a selection, via the GUI, to stop display of the sorted plurality of images in the sequence; receiving another selection, via the GUI, to remove at least one image at which the sequence has been stopped from being used to identify the tracking target of the patient; and identifying the tracking target of the patient without the at least one removed image.