Elimination de cônes d\textquoterightombre acoustique par combinaison d\textquoterightimages échographiques mode B

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Spatial compounding in ultrasonic imaging using and articulated scan arm

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Elimination de cones d'ombre acoustique par combinaison d'images échographiques mode B

Un système de reconstruction d'images échographiques a été mis au point dans le but d'éliminer les cônes d'ombre engendrés sur les images par des structures hyperéchogènes. L'image reconstruite est la combinaison de plusieurs vues partielles et complémentaires, obtenues en tournant autour de l'hyperéchogénicité. La position relative des images est donnée par un bras articulé de localisation à l'extrêmité duquel est fixée la sonde échographique.A system devoted to echographic image reconstruction has been performed in order to eliminate acoustic shadowing generated in the images by the hyperechogenic structures. The image reconstruction consists in the combination of several complementary and partial views, obtained by turning around the hyperechogenicity. The relative position of the images is given by a pantograph localisation system on which is fixed the echographic transducer

Characterisation of muscle tissue during effort by texture analysis of ultrasonic images

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Utilization of a pantograph localization system for speckle reduction by spatial compounding in B-scan echography

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Plaque density on CT, a potential marker of ischemic stroke

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Plaque density on CT, a potential marker of ischemic stroke.

International audienceThe authors sought to determine in a retrospective analysis whether carotid plaque soft TD on CT is associated with recent ischemic neurologic events. Among 141 patients (99 asymptomatic), 106 plaques with more than 50% stenosis were selected for density measurements. They found an odds ratio for neurologic events associated with a 10-point decrease in density of 1.54 (p = 0.002), showing an association between plaque density and neurologic events