Method and apparatus for examining the interior material of...

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G01N 29/06 (2006.01) A61B 8/00 (2006.01) G01N 29/52 (2006.01)

Patent

CA 2553340

A method for examining the interior material of an object, such as a pipeline or a human body, from a surface of an object using ultrasound having a frequency of at least 100 KHz, wherein the ultrasound is supplied to the interior material of the object. The reflectiLons and/or diffractions of the ultrasound from the interior material of the object are received using ultrasonic receivers which are acoustically coupled to the surface of the object at positions which are distributed in two dimensions of the surface of the object, at différent points in time or not, wherein, with each of the feelers, a receiving signal is generated, wherein the receiving signals are processed in combination in order to determine, according to the principie of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur.

L'invention concerne un procédé destiné à examiner la matière interne d'un objet, notamment un pipeline ou un corps humain, à partir d'une surface d'un objet au moyen d'ultrasons présentant une fréquence d'au moins 100 KHz, l'ultrason étant appliqué à la matière interne de l'objet. Les réflexions et/ou diffractions de l'ultrason de la matière interne de l'objet sont reçues au moyen de récepteurs ultrasonores couplés acoustiquement à la surface de l'objet au niveau de positions réparties en deux dimensions de la surface de l'objet, au niveau de différents points dans le temps ou non, un signal de réception étant généré avec chacune des touches, les signaux de réception étant traités en combinaison afin de déterminer, en fonction du principe d'extrapolation de champ d'onde inverse, à quel endroit dans la matière interne de l'objet les réflexions et/ou les diffractions ont lieu.

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