In the mid-1960s and early 1970s, several studies were published indicating the value of infrared (IR) thermography in veterinary medicine [1-3]. In the 1965 research study of Delahanty and George [2], the thermographic images required at least 6 min to produce a thermogram, a lengthy period of time during which the veterinarian had to keep the horse still while the scan was completed. is disadvantage was overcome by the development of high-speed scanners using rotating IR prisms which then could produce instantaneous thermograms.