A detection and tracking apparatus for detecting and tracking at least the position of a body organ subject to manipulation, said body organ being selected among thoracic internal organs, abdominal organs and pelvic organs, having: - at least one detection sensor for detecting the position of said body organ, configured to provide information of an absolute or time-differential type; - a rigid coupling means for coupling said at least one detection sensor to said body organ; - at least one transmitting unit for transmitting the information about said position of an absolute or time-differential type detected by said detection sensor; - at least one receiving unit for receiving said information about said position of an absolute or time-differential type transmitted by said transmitting unit; characterised in that it further has: - at least one wearable and/or portable display device; - at least one processing unit, in communication with said receiving unit and with said display device, configured to perform the following steps of a procedure for evaluating said information about said position of an absolute or time-differential type: a) determining a representation of said position of said organ, said processing unit having an inductive or deductive algorithm for determining said representation; b) associating a three-dimensional augmented reality image of said organ with said representation of said position thereof; c) overlaying said three-dimensional augmented reality image with the position of said organ in a common three-dimensional space through said wearable and/or portable display device; d) tracking position of said three-dimensional augmented reality image by superimposing it with the position of said organ of which said three-dimensional augmented reality image is a representation, comparing said information about said position with a plurality of predefined models of position of organs. - at least one detection sensor for detecting the position of said body organ, configured to provide information of an absolute or time-differential type; - a rigid coupling means for coupling said at least one detection sensor to said body organ; - at least one transmitting unit for transmitting the information about said position of an absolute or time-differential type detected by said detection sensor; - at least one receiving unit for receiving said information about said position of an absolute or time-differential type transmitted by said transmitting unit; - at least one wearable and/or portable display device; - at least one processing unit, in communication with said receiving unit and with said display device, configured to perform the following steps of a procedure for evaluating said information about said position of an absolute or time-differential type: a) determining a representation of said position of said organ, said processing unit having an inductive or deductive algorithm for determining said representation; b) associating a three-dimensional augmented reality image of said organ with said representation of said position thereof; c) overlaying said three-dimensional augmented reality image with the position of said organ in a common three-dimensional space through said wearable and/or portable display device; d) tracking position of said three-dimensional augmented reality image by superimposing it with the position of said organ of which said three-dimensional augmented reality image is a representation, comparing said information about said position with a plurality of predefined models of position of organs. a) determining a representation of said position of said organ, said processing unit having an inductive or deductive algorithm for determining said representation; b) associating a three-dimensional augmented reality image of said organ with said representation of said position thereof; c) overlaying said three-dimensional augmented reality image with the position of said organ in a common three-dimensional space through said wearable and/or portable display device; d) tracking position of said three-dimensional augmented reality image by superimposing it with the position of said organ of which said three-dimensional augmented reality image is a representation, comparing said information about said position with a plurality of predefined models of position of organs.