Analýza vlivu transformačních metod patologických EKG záznamů na vektorkardiografické průběhy

Abstract

Vectorcardiography as a diagnostic method is not used in today's clinical practice, and therefore it was necessary to mathematically derive various transformation methods. In this bachelor's thesis, an analysis of selected 5 transformation methods for converting ECG to VCG was processed. The work contains chapters containing the theory of heart function, cardiac conduction system, action potential, current ECG lead systems and history of lead systems for VCG. An integral part are chapters on the conversion of ECG to VCG, from which the practical part is based, and a chapter on the current state of transformation methods for ECG recordings. After this theoretical part, a practical part is developed here, which applies individual transformations to selected ECG recordings, either to physiological or pathological recordings. The results were analyzed and subjected to statistical analysis. The main output and conclusion are the overall evaluation of the results and the determination of the most accurate transformation method for a certain type of records. An integral part of this work is the created graphical user interface, which serves end users from uploading and pre-processing of various records through the application of selected transformations and statistical analysis to the evaluation of transformation methods.

Description

Subject(s)

Vectorcardiography, Franks´s lead system, Quasi orthogonal transformation, Dower’s inverse transformation, Kors’s regression transformation, QLSV and PLSV transformation, mean squared error, Shapiro-Wilk test, Kruskal-Wallis’s test, Dunn's test, post-hoc analysis.

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