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EFFET PHOTOÉLECTRIQUE Généralités:-1 photon X donne la _________ de son énergie à 1 électron qui est expulsé Augmentation de la probabilité d'interaction avec:-Forte __________ en électron=>Z (Os>muscle>graisse>air)-Faible ________ des rayons X: -suffisant pour ioniser les couches profondes du noyau cible -lorsque l'énergie des RX diminue, la différence d'atténuation __________-Effet photoélectrique ______+++ avec Z et prédomine à basse énergie Énergie, contraste et absorption:-RX basse E=>________ contraste et absorption ++-RX haute E=>_______ absorbé, moins de contraste
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