Motion of equivalent electric dipole to cardiac activity estimated from body surface potentials.
نویسندگان
چکیده
By means of the least square method, the motion of an equivalent electric dipole which simulates electric activity of the heart was traced from body surface potentials. In normal case, this equivalent dipole was a good approximation.
منابع مشابه
Localization of an Equivalent Central Cardiac Electric Dipole for Electrocardiography Applications
In the dipole approach the activity of the heart is represented by one or two moving-rotating current dipoles. The basic underlying principle is to select the amplitudes and coordinates of these dipoles within an appropriate model of the torso such that calculated torsosurface potential distribution closely matches the measured body-surface-potential distribution. This source model was used by ...
متن کاملQuantitative prediction of body surface potentials from myocardial action potentials using a summed dipole model.
This paper demonstrates quantitatively, using streamlined mathematics, how the transmembrane ionic currents in individual cardiac muscle cells act to produce the body surface potentials of the electrocardiogram (ECG). From fundamental principles of electrostatics, anatomy, and physiology, one can characterize the strength of apparent dipoles along a wavefront of depolarization in a local volume...
متن کاملMoving multiple dipole model for cardiac activity.
A single-dipole model and a two-dipole model have been examined to approximate the electrical activity of heart; positions as well as vector components of these dipoles were estimated from the body surface potential distribution that was measured with 64 electrodes arranged on the chest. The "residue" has been defined as a measure for how much potential component is left that cannot be attribut...
متن کاملStudies of the equivalent cardiac generator behavior of isolated turtle hearts.
Equivalent cardiac generator components were determined for a series of excised turtle hearts immersed in Ringer's solution. Relatively large preparations were contained within a specially designed spherical chamber, and electric field potentials were derived from 20 evenly spaced electrodes on the chamber wall. A laboratory computer was used to acquire and store the 20 leads of signal data in ...
متن کاملUse of body surface potential maps for model-based assessment of local pathological changes in the heart
High resolution body surface potential maps and an equivalent current dipole model of the cardiac generator were used to assess the heart state in two abnormal conditions: WPW syndrome with single accessory pathway and local ventricular ischemia. Results of a simulation study and experimental verification of the method for both cardiologic abnormalities are presented. Single accessory pathway i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Japanese heart journal
دوره 21 5 شماره
صفحات -
تاریخ انتشار 1980