Conformal radiotherapy is a therapeutic method requiring medical imaging, generally CT images to obtain Hounsfield number and electronic density data indications. The use of MRI simultaneously with CT imposes to deform CT images and superimpose them on MR images. The aim of this paper is to propose a nonrigid matching method between the two modalities (CT and MRI). The transformation model is defined by an optical flow registration algorithm, using mutual information as a similarity criterion.
Les auteurs s’intéressent ici à la violence au sein du couple au regard des dimensions de dynamique et de crise conjugales. À l’appui de deux cas cliniques, ils montrent en quoi la violence conjugale doit être pensée dans une perspective dynamique articulant trajectoire de vie, modalités du fonctionnement psychique, construction, expérience et mouvement de la relation conjugale. Plus précisément, les auteurs discutent l’hypothèse de la répétition de la violence comme tentative d’élaborer le trauma et la mise en échec des fonctions contenante et de pare-excitation de l’enveloppe psychique du couple. Ils concluent sur les enjeux du travail clinique auprès du couple auteur/victime de violences conjugales.
Lien vers les articles de cette revue en texte intégral : http://www.cairn.info/revue-annuel-de-l-apf-2015-1.htm REVUE DE SOMMAIRES (n°3-2015) Revue de sommaire n°3-2015 Centre de Documentation Page1 BULLETIN DE Les discours intérieurs associés aux comportements de soumission, de rébellion et de subterfuge AUZOULT L 2015 Janvier-Février 535 3-14 PSYCHOLOGIE La dissonance cognitive : conséquence de la soumission induite ou effet de l'attente de l'expérimentateur ?
This paper describes a method to register ultrasound images (US) to pre-treatment images. The aim of the work is the information transfer between the pre-treatment imaging modality (MR or CT) and the intra-treatment imaging (US). Ultrasound images are spatially tracked by a stereo-vision system and the prostate boundaries are automatically extracted using a method that combines morphological and adaptive speckle suppression and a priori knowledge. MR/CT images are merged to construct a volume of pelvis using fuzzy logic algorithm and an MPR virtual slice corresponding to the orientation of the US image is generated from the volume. The prostate is segmented from the slice by a model-based method and rigidly registered by ICP algorithm to the US contour. Preliminary experiences gave satisfactory results with short computing time.
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