State-of-the-art Breast Thermography, also known as Digital Infrared Thermal Imaging or Medical Thermal Imaging is a screening tool for early breast cancer detection. It uses ultra-sensitive infrared cameras and sophisticated computer software to identify unusual changes in the temperature and blood vessels of the breasts. Breast Thermography is based on the principle that a cancer requires an infrastructure of abnormal blood vessels to supply the nutrients necessary for cancer's growth. These abnormal blood vessels are not under the control of the Autonomic Nervous System (ANS) and do not constrict in response to cold, whereas normal blood vessels supplying healthy tissues do. The Thermogram is able to visualize this infrastructure of abnormal blood vessels, by detecting the increased heat and blood flow surrounding abnormal tissues. This phenomenon is what increases clinical Thermography's sensitivity (accuracy) and specificity (ability to rule out false positives). Mammography, in contrast, has a high rate of false positives necessitating further invasive testing. However, always remember that mammography is considered the first line of defense in diagnosing breast cancer and thermography should only be used as an adjunct procedure to Mammography.