Recent improvements in infrared sensor and computer technology led to the resurgence of the infrared imaging in medicine. The technique has many advantages such as being noninvasive and relatively less expensive than MRI or ultrasound. These imaging techniques are based on the following principle: when a surface is heated or cooled, variations in the thermal properties of a structure result in identifiable temperature contours on it. These contours are characteristic of the structure’s shape, depth, and its thermal properties.

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