Method and apparatus for high resolution dynamic digital...

A - Human Necessities – 61 – B

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A61B 5/00 (2006.01)

Patent

CA 2377344

An infrared imaging camera (4) acquires a plurality of frames (94) of infrared radiation from a patient (P) positioned in a field-of-view (92) of the camera (4). Each frame (94) is acquired during a corresponding frame sample interval and each frame (94) corresponds to the infrared radiation acquired from an array of optical elements (90) in the field-of-view (92) during its frame sample interval. Plural rates of change are determined from infrared radiation received from the array of optical elements (90), with each rate of change corresponding to a change of infrared radiation received from the same optical element (90) in at least two frames (94). Each rate of change is mapped to a color or a shade of gray and the color or shade of gray of each rate of change is mapped to a position in an image corresponding to the position of the corresponding optical element (90) in the field-of-view (92). The camera (4) can be used for early detection of neoplastic disease process, detection of angiogenesis and/or identification of treatment sites for pain management therapeutic modalities.

La présente invention concerne une caméra d'imagerie infrarouge (4) capable de faire l'acquisition d'une pluralité de trames (94) de rayonnement infrarouge émis par un patient (P) se trouvant dans un champ de vision (92) de la caméra (4). L'acquisition de chaque trame (94) se fait pendant un intervalle correspondant d'échantillonnage de trame, chaque trame (94) correspondant au rayonnement infrarouge acquis à partir d'une matrice d'éléments optiques (90) dans le champ de vision (92) pendant son intervalle d'étalonnage de trame. A partir du rayonnement infrarouge reçu en provenante de la matrice d'éléments optiques (90), on évalue plusieurs coefficients de variation correspondant chacun à une variation du rayonnement infrarouge reçu en provenance d'un même élément optique (90) à l'occasion d'au moins deux trames (94). A chaque coefficient de variation, on fait correspondre une couleur ou une nuance de gris, chaque couleur ou nuance de gris représentant un coefficient de variation étant mis en correspondance avec une position dans une image correspondant à la position de l'élément optique correspondant (90) dans le champ de vision (92). Cette caméra (4) convient à la détection précoce des processus morbides néoplasiques, la détection de l'angiogenèse et/ou l'identification de sites de traitement dans le cas de protocoles thérapeutique de soulagement de la douleur.

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