Comparison of heart vectors calculated with different systems of leads.
نویسنده
چکیده
Einthoven's equations for the heart vector are based on the assumption that voltages measured across the trunk horizontally (or vertically) are proportional to the horizontal (or vertical) component of the dipole moment of the heart's electromotive forces. One necessary consequence of this assumption is that all the horizontal (or vertical) voltages be similar, and that heart vectors calculated with different sets of these voltages and appropriate formulas be the same. An experimental test of this predicted result is described in this paper.
منابع مشابه
A comparison of arrived dose to the heart in the treatment of breast cancer in different modes of proton radiation by proton therapy using Monte Carlo simulation
Introdution: Today, the Advantages of radiation therapy by charged particles is indicated for the treatment of cancerous. During the passing of proton beam in the body tissues, secondary particles produce, which penetrate to the body healthy tissues and cause damage. The aim of this research was calculating the Spread out Bragg Peak for covering the breast cancer and investigating arrived dose ...
متن کاملSelecting effective features from Phonocardiography by Genetic Algorithm based on Pearson`s Coefficients Correlation
The heart is one of the most important organs in the body, which is responsible for pumping blood into the valvular systems. Beside, heart valve disorders are one of the leading causes of death in the world. These disorders are complications in the heart valves that cause the valves to deform or damage, and as a result, the sounds caused by their opening and closing compared to a healthy heart....
متن کاملیک روش مبتنی بر خوشه‌بندی سلسله‌مراتبی تقسیم‌کننده جهت شاخص‌گذاری اطلاعات تصویری
It is conventional to use multi-dimensional indexing structures to accelerate search operations in content-based image retrieval systems. Many efforts have been done in order to develop multi-dimensional indexing structures so far. In most practical applications of image retrieval, high-dimensional feature vectors are required, but current multi-dimensional indexing structures lose their effici...
متن کاملModeling of Nonlinear Systems with Friction Structure Using Multivariable Taylor Series Expansion
The major aim of this article is modeling of nonlinear systems with friction structure that, thismethod is essentially extended based on taylore expansion polynomial. So in this study, thetaylore expansion was extended in the generalized form for the differential equations of the statespaceform. The proposed structure is based on multi independent variables taylore extended.According to the pro...
متن کاملThe Effect of Educational Expenditure on Economic Productivity: A Comparison of the Situations in Iran, India, Japan, Germany, and Australia
The Effect of Educational Expenditure on Economic Productivity: A Comparison of the Situations in Iran, India, Japan, Germany, and Australia A. Abbaaspoor, Ph.D. E. Jahaangard, Ph.D. E. Misaaghifar Different countries may differ in their educational systems, but they are the same as far as their educational systems interacting with their socio-economic systems. From a ...
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:
- Circulation
دوره 2 1 شماره
صفحات -
تاریخ انتشار 1950