A method of infrared tomography, active and passive, for...

Details A method of infrared tomography, active and passive, for... A method of infrared tomography, active and passive, for...

A - Human Necessities

61

B

A61B 5/00 (2006.01)

Patent

CA 2636476

A device and method are disclosed to non-invasively identify a lesion inside a region of living tissue. The region is exposed to medium infrared (MIR) radiation to preferentially heat the lesion. The region is then scanned for black body radiation in a medium infrared waveband. A lesion, being hotter than the surrounding tissue, is detected as domain of increased local emittance of MIR radiation. Further scanning or heating in a second waveband is used to identify a particular class of lesions. The invention is particularly useful for early identification of malignant breast cancer.

L~invention concerne un appareil et une méthode qui permettent d~identifier de manière non envahissante une lésion à l'intérieur d'une région de tissu vivant. La région est exposée à un rayonnement infrarouge moyen (RIM) afin de préférentiellement chauffer la lésion. La région est ensuite scannée pour radiation de corps noire dans une gamme d'ondes infrarouges moyennes. Étant plus chaude que le tissu environnant, une lésion est détectée comme un domaine d'émission locale augmentée de radiation RIM. Un scannage ou chauffage supplémentaire dans une deuxième gamme d'ondes est utilisé pour identifier une classe particulière de lésions. L'invention est particulièrement utile pour une identification précoce de cancer du sein malin.

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