1. A method for displaying images used during the administration of radiation treatment to a patient, the method comprising the steps of: (a) obtaining an image of one or more internal anatomical features of the patient; (b) obtaining a representation of one or more external features of the patient; (c) annotating the image with the representation of the one or more external features; (d) displaying the annotated image; and (e) in response to the displayed annotated image, iteratively (i) adjusting one or more treatment parameters relating to the administration of radiation treatment to the patient and (ii) updating the displayed annotated image based at least in part on the parameter adjustments.