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A novel modelling and experimental technique to predict and measure tissue temperature during CO 2 laser stimuli for human pain studies

A novel modelling and experimental technique to predict and measure tissue temperature during CO 2 laser stimuli for human pain studies,10.1007/s10103

A novel modelling and experimental technique to predict and measure tissue temperature during CO 2 laser stimuli for human pain studies   (Citations: 2)
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Laser nerve stimulation is now accepted as one of the preferred methods for applying painful stimuli to human skin during pain studies. One of the main concerns, however, is thermal damage to the skin. We present recent work based on using a CO2 laser with a remote infrared (IR) temperature sensor as a feedback system. A model for predicting the subcutaneous skin temperature derived from the signal from the IR detector allows us to accurately predict the laser parameters, thus maintaining an optimum pain stimulus whilst avoiding dangerous temperature levels, which could result in thermal damage. Another aim is to relate the modelling of the CO2 fibre laser interaction to the pain response and compare these results with practical measurements of the pain threshold for various stimulus parameters. The system will also allow us to maintain a constant skin temperature during the stimulus. Another aim of the experiments underway is to review the psychophysics for pain in human subjects, permitting an investigation of the relationship between temperature and perceived pain.
Journal: Lasers in Medical Science - LASER MED SCI , vol. 21, no. 2, pp. 95-100, 2006
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