MRI-kompatibilní neinvazivní vláknově optický senzor založený na Braggovské mřížce pro měření tepové frekvence lidského těla

Abstract

This master's thesis focuses on design of a fiber-optic sensor based on the Bragg grating Principle for monitoring heart activity and primary development of heart rate over time. The fiber grate sensor is designed to be suitable for measurements in magnetic resonance environments (MR) thus to be resistant to the electromagnetic interference (EMI). As this is a recent issue, the development of modern diagnostic equipment, conventional methods based on measuring electrical potentials (ECG) may fail, or their functional reliability is negatively affected. For this reason, new possibilities and sensor systems are being developed. The thesis also describes basic theoretical information in order to understand the function of a selected type of fiber-optical sensor. Furthermore, a comprehensive design and implementation of the sensor, experimental verification of its functionality and accuracy of FBG sensor compared to reference sensor, data evaluation are also included. Data evaluation was obtained by the most used statistical biomedical method which states an average accuracy of 81.25 % according to the Bland-Altman statistical method.