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NUMÉRISATION DES IMAGES Intro: une image __________, c'est un signal __________ qui peut retranscrire différents phénomènes physiques en fonction de la modalité d'imagerie Ex:-la ____________ ou tomodensitométrie ou scanner, cartographie the l'atténuation du photon X et mesure la _________ des tissus -Scintigraphie—> cartographie the la qtité de photons __________ ou d'annihilation émis par un médoc radio pharmaceutique-L'_________ cartographie des interfaces tissulaires d'impédance différente -l'_____ cartographie la résonnance des protons, notamment ceux d'hydrogène, sousmis à un champs magnétiques intense Étapes numérisation= mm étapes signal unidimensionnel, avec toutefois quelques particularités

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