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Our computer simulations allow us to study several mechanisms inducing self-sustained conduction troubles leading to an uncoordinated contraction of cardiac fibres related to ventricular tachycardia and fibrillation. These simulations show that an important parameter is the wave length which is defined by the product of the conduction velocity by the refractory period duration. Grossly, any process...
The paper presents recent advances of a sea wave energy conversion system into electrical energy both in modeling and control strategy techniques. First, the simulation model has been improved in order to better represent the impact of the drag force due to the friction of water on the cylindrical buoy. Moreover, the control strategy has been modified through a real-time control scheme which adapts...
An image database of echocardiograms, EVALECHOCARD, dedicated to regional wall motion scoring is presented. It is devoted to become a public reference database, in order to develop an objective comparison on the same data of different computer vision packages aiming at scoring the regional wall motion. The database construction is described, including the data acquisition, the experts' annotation...
The well accepted quantification of mitral regurgitations based on the PISA method includes, for the analysis of the proximal part of the jet, a single velocity measurement (the Nyquist limit) and a single distance depending on the visual determination of the position of the regurgitant orifice. In order to improve the accuracy of this approach, we have written the classical PISA equation and the...
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