The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Electrically or magnetically measured electrophysiologic activity of some organs can be described by equivalent current sources that replace in a model the collective contribution of many electrically active cells. These modelled current sources are introduced in order to simplify the calculation of electric potentials and magnetic fields that are needed in the process of finding the diagnostically...
A method for automatic signal analysis and signal averaging of multichannel electric or magnetic heart signals is proposed. The method is based on the calculation of a matrix of similarity between all ventricular complexes in the multichannel signal. This similarity matrix is used to group the heart beats into different clusters. The temporal alignment of heart beat signals belonging to one cluster...
The paper presents a short overviev of the presents stste in computer modelling of the heart and the thorax. Source models and numerical techniques to solve the forward and inverse problems of magneto-and electrocardiography are described. In addition, accurate integration of the inverse solutions with the heart anatomy is discussed.
In this paper, an approaeh taken in the BioMag Laboratory in Helsinki University Central Hospital for non-invasive deteetion of patients at risk for malignant arrhythmias is deseribed. The multichannel high-resolution magnetoand eleetroeardiographic instrumentation and other facilities of the BioMag Laboratory are introdueed. The different methods implemented to deteet arrhythmogeneity and repolarization...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.