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Two-dimensional (2D) speckle tracking (ST) has been used extensively over the years in many different ultrasound (US) elasticity imaging applications with some limitations. 2D ST is limited especially for cardiac applications because of the 3D and complex motion of the heart. Out-of-plane motion is a major source of decorrelation for 2D ST. Recently 3D ST based on full 3D kernel search has been developed...
In this work, we sought to assist the optimization of Cardiac Resynchronization Therapy (CRT) through the characterization of electro-mechanical delays for each region of the Left Ventricle. This characterization is based on the fusion of electrical, mechanical and anatomical data acquired from Electro-Anatomical Mapping (EAM), Speckle Tracking Echocardiography (STE) and Multislice CT (MSCT) imaging,...
A main limit of biventricular Cardiac Resynchronization Therapy (CRT) is the high rate of non-responder. A challenging task to carry out remains both the identification of the most effective pacing sites and the left ventricular lead positioning by a venous access. This paper aims to show how cardiac CT imaging can be helpful for the clinician to analyse venous system and cardiac function before the...
Cardiac Resynchronization Therapy is a treatment for bi-ventricular asynchronism. It can be optimized by the identification of the most effective pacing sites. The aim of this study is to provide a helpful tool to perform this identification by the fusion of electrical and anatomical information resulting from Electro-Anatomic Mapping (EAM) data and Multislice Computerized Tomography (MSCT) imaging...
The goal of this work is to assess global cardiac function in terms of ventricular volume from multi-slice computed tomography dynamic dataset. We propose an approach for the segmentation of the left ventricle and the measurement of the ventricular volume along the whole cardiac cycle. It is based on the segmentation of the left cavities using a fuzzy connectedness algorithm. The interactive placement...
Stereo projection using interference filters is an advanced wavelength multiplexing approach that specifically takes into account the nature of the human eye characterized by three types of color receptors. Accordingly, the filters used to code image information for the left and for the right eye image have three narrow bands each. Wavelength multiplexing represents a modern approach by overcoming...
In this paper we present a new technique for general purpose, semi-interactive and multi-object segmentation in N-dimensional images. This method associates supervised classification methodologies with a region growing algorithm coupled with a connectivity approach. These concepts are combined in a competitive context implemented via a distributed real-time technology which allows multi-object detection...
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