1. A prostatic imaging method comprising recording and processing images acquired by an ultrasonographic head of a rectal probe equipped with an active puncture guide, processing at least a part of the images acquired by the probe for calculating transformations to a “reference image” repository relative to the initial position of a prostate, with at least a part of the images acquired during successive punctures including a location of various positions of a needle being recorded with a view to visualising representations thereof on a single image including at least a part of the prostate.