1. A method of processing a radiological image of an organ, the organ being connected to a flow circulation network, the method comprising: defining a contour to delimit a zone of interest of the organ in the radiological image of the organ; identifying and associating, via a processor, at least a part of the flow circulation network with the zone of interest that the flow circulation network supplies blood to, or which originates from the zone of interest; the step of identifying comprising: identifying all terminations in the flow circulation network associated with points contained in the zone of interest; starting from the terminations and working opposite a direction of blood flow, identifying at least one vessel of the flow circulation network supplying blood flow to the zone of interest; and isolating and displaying on a display the zone of interest of the organ and displaying and highlighting the associated part of the network.