CHANGES OF THE READING OF AN INFRARED TYMPANIC THERMOMETER BY THE DISTANCE OR ANGLE TO THE WATER SURFACE

• Published in: JIBI INKOKA TEMBO Vol. 42; no. 1; pp. 23 - 29
• Main Author: Nishizawa, Shinji
• Format: Journal Article
• Language: Japanese
• Published: Society of Oto-rhino-laryngology Tokyo 1999
• Subjects: angle; infrared tympanic thermometer; length
• ISSN: 0386-9687; 1883-6429
• DOI: 10.11453/orltokyo1958.42.23

By anatomical differences of the external auditory canal, or by inadequate way of placing the probe of the infrared tympanic thermometer (ITM) into the ear canal, the probe of the ITM may not be directed properly to the tympanic membrane. An ITM was examined to see the effect of the distance from the probe to water surface and by the angle between a line of the probe and water surface. In order for the influence of the distance to be examined, the probe was placed from the water surface for 0.5, 1 cm and from 1 cm to 10 cm by 1 cm step. In order for the effect of the angle to be examined, the probe with 2 or 4 cm from water surface was tilted from a vertical lineto 60° by 10° step. A water bath was kept 35.4°C and 37.7°C. Each reading was taken for 10 times. There was no significant difference between 1 and 2 cm readings from water surface. There was no significant difference from the vertical line to 30°.