1. A method of processing images of a region of interest of a patient, comprising the steps of: acquiring a reference image of the region of interest of the patient; during a pullback of an intravascular sensor introduced inside the region of interest of the patient, triggering simultaneously the steps of: acquiring a data collected by the intravascular sensor that is characteristic of the region of interest, and acquiring a succession of images of the region of interest, each of the succession of images associated with the location of the intravascular sensor when acquiring the data, respectively; registering the succession of images for which the data collected by the intravascular sensor are available; associating the location of the intravascular sensor relative to the step of acquiring the data collected by the intravascular sensor characteristic of the region of the interest; and displaying and positioning the data collected by the intravascular sensor on the reference image in correspondence to the location of the intravascular sensor at the respective step of acquiring the data.