8. At all times too, remember Ben Felson’s WGC – the ‘World’s Greatest Consultant' to a radiologist – is the patients’ previous imaging studies; it is equivalent to the ‘past history' that a physician tells you about. Ever so often, these studies will solve the problem for you.. keep plugging away at the patient till he and you are sure that there INDEED are NO previous images of any kind. By the way, I smile to myself, when I hear the phrase "past history".. .. all history is past!! Patients have a way of 'hiding' their old images in the 'plastic bags' they get along. I always ask "What do you have in that plastic bag?"