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The exposure index is an important measure used in digital radiography to control the dose at the detector. This value should be computed in regions of interest that are adapted to each patient's anatomy and pose.We propose to define automatically these regions based on anatomical landmarks in the main structures of interest (head, thoracic spine, lungs, lumbar spine, pelvis, femurs, knees, tibiae)...
Fetal dosimetry studies require the development of accurate 3D models of the fetus. This paper proposes a 3D articulated fetal growth model including skeleton, body envelope, brain and lungs based on medical images of ten different fetuses acquired in clinical routine. The structures of interest were semi-manually segmented from the images and surface meshes were generated. A generic mesh of each...
L’IRM devient un examen primordial pour le bilan post-infarctus, permettant ainsi d’étudier la fonction contractile et la viabilité myocardique. Cette étude a pour objectif de segmenter automatiquement les images de rehaussement tardif (RT) avant de quantifier la transmuralité de l’extension de l’infarctus du myocarde (IDM). La segmentation du myocarde se fait sur les images de contraction (ciné)...
L’imagerie par résonance magnétique (IRM) cardiaque est une modalité d’imagerie performante non invasive, qui permet d’évaluer en un seul examen la fonction cardiaque et la viabilité myocardique. Pour le suivi des maladies ischémiques, la segmentation du ventricule gauche est une étape nécessaire. Cette étape, souvent réalisée d’une façon manuelle, est fastidieuse. Une nouvelle approche automatisée,...
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