DESIGN OF A MICROSTRIP TRANSMISSION LINE RESONATOR FOR MAGNETIC RESONANCE IMAGING SYSTEM

Abstract

Magnetic Resonance Imaging (MRI) is a medical imaging technique that uses powerful magnetic fields and radio waves to obtain detailed images of the inside of the human body. It allows visualization of tissues, organs, and anatomical structures using the magnetic properties of atoms present in the body. MRI is non-invasive, safe, and widely used in various medical fields for diagnosing and monitoring medical conditions. This thesis presents a study on the design of microstrip antennas for Magnetic Resonance Imaging (MRI) applications. The main objective of this end-of-study project is to propose microstrip antenna structures as an alternative to conventional resonators, such as birdcage resonators, used in MRI systems. These new structures function as resonators capable of generating magnetic fields acting as uniform B1 fields within an MRI system. As part of this study, a Yagi microstrip antenna design is proposed and analyzed for its suitability in MRI environments. The designed microstrip antennas are modeled and simulated using the HFSS (High-Frequency Structure Simulator) software . The simulations allow the evaluation of the performances of the microstrip antennas, such as the Larmor resonance frequency suitable for the considered MRI system, radiation patterns and the magnetic field distribution around the antenna.