Source:http://linkedlifedata.com/resource/umls/id/C0687607
UMD: Infrared electronic thermometers used to measure a patient's ear canal temperature. Most of these thermometers are designed to estimate the internal ("core") temperature of the body by measurement of infrared radiation from within the auditory canal, while others claim to measure directly the infrared emissions from the tympanic membrane. Infrared ear thermometers also usually display "corrected" offset values of oral and/or rectal temperature.