MR imaging, MR spectroscopy, and diffusion tensor imaging of sequential studies in neonates with enc

An individual animal identification system in a station includes a structure forming a passage way in which the animal, whose neck is furnished with an identification collar, engages its head, spreading metallic bars affixed on articulated flaps on the structure of the station. The collar worn by each animal is in the form of a V with a large base radius. The collar includes two identical parts, each formed from a metallic tube, protected against corrosion or made of stainless steel, whose top extremity has a passage hole for a cord permitting the easy attachment of the collar to the animal's neck. The bottom extremity of the two identical parts of the collar is either pressed or held on a tube made on a semi-rigid plastic material. An electronic identification circuit for storage of a specific identification number is disposed in the plastic tube. In operation, the collar closes a presence detection electrical circuit when it comes in contact with the metallic bars affixed to the flaps. The electronic identification circuit modulates the current flowing in the closed circuit, and thereby communicates its identification number to a data processor which senses and analyzes the current flowing in the presence detection electrical circuit and determines the identification number.