Breakthrough Technology

TemporalScanner™ Temporal Artery Thermometry

With just a light stroke across the temporal artery area of the forehead, an accurate reproducible temperature is measured in about 3 seconds – eliminating any discomfort caused by a thermometer inserted into the ear, mouth, or rectum. Designed specifically to be completely non-invasive, the TemporalScanner is a most significant advance, applying Exergen’s well-proven Arterial Heat Balance (AHB) technology to the most convenient site possible.

Branching from the external carotid, the superficial temporal artery courses about 1 mm below the skin of the lateral forehead, providing good heat conduction to the skin surface. The TA is readily accessible, and provides no risk of injury from being touched. Since it is not an anastomosing vessel, perfusion remains high and stable, ensuring the reliability of conditions for the patented AHB method to compute accurate temperatures. High resolution infrared images confirm the reliability of the heat signature of the TA area for all ages.

Arterial Heat Balance (AHB) at the Temporal Artery at Room Temperature

Blood at Ta Is supplied to the temporal artery from the aorta via the carotids, and is cooled by heat energy lost to the environment at te resulting in cooler Tta, By measuring this heat loss and adding it back to Tta the AHB is formed and Ta is then recovered.

Ear Thermometry That Scans For Accuracy

The Exergen LTX Ear Thermometers, available in both standard and pediatric models, are the most technologically advanced ear thermometers available, providing the highest possible accuracy with the least possible invasiveness of any ear thermometer. Employing Exergen’s patented Arterial Heat Balance method and high speed infrared scanning, the LTX locates the warmest tissue in the ear canal by gentle rocking, which assures accuracy and reproducibility. The large rounded probe never enters the ear canal, and no manipulation or ear tug is required, thus providing patients with the greatest possible comfort for an ear thermometer.

Loveys et al Clin Pediatr (Phila) 1999 Aug;38(8):463-6.
Modell et al. Southern Med J. Vol.92, No. 7, Jul 1999.
Cronin et al. Aust Crit Care 2000; 13 (2): 59-64
Amoateng-Adjepong et al. Chest 1999 Apr;115(4):1002-5

DermaTemp Skin Surface Scanning

Levinsohn et al demonstrated that the infrared method of assessing perfusion was as reliable as Doppler methods, but far less expensive, much faster, and easier to use. Other applications include:

  • Regional blocks
  • Joint inflammation
  • Digital perfusion assessment
  • Reconstructive surgery
  • Pain management
  • Diabetic foot screening
  • Peripheral nerve injury
  • Wound management
  • Raynaud’s Syndrome
  • Hanson’s Disease
  • Vascular obstruction
  • Soft tissue injuries

Armstrong et al. J Foot Ankle Surg 1996 Jul-Aug; 35(4):335-8; discussion 372-3.
Levinsohn et al. J Hand Surg [Am] 1991 Nov;16(6):1056-62