SURGICAL OPERATION AIDING SYSTEM

A surgical operation aiding system comprises an apparatus for obtaining an image signal representing an image of a sick portion of a living body, which is to undergo a surgical operation, and an image displaying apparatus for reproducing the image of the sick portion from the image signal and displaying the reproduced image on the actual sick portion of the living body. The magnification and/or the orientation of the displayed image is adjusted such that the position of the actual sick portion of the living body and the position of the pattern of the sick portion in the displayed image may match with each other.