Measuring NMR and developing 2D imaging in a low-cost, portable MRI prototype

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Measuring NMR and developing 2D imaging in a low-cost, portable MRI prototype

Type: Master thesis
Title: Measuring NMR and developing 2D imaging in a low-cost, portable MRI prototype
Author: Burgwal, Roel
Issue Date: 2018-06-30
Keywords: magnetic resonance imaging
MRI
low field
permanent magnet
Halbach
RF
radiofrequency
engineering
developing countries
low-cost
Abstract: The medical technique of Magnetic Resonance Imaging (MRI) is barely available in developing countries because of its high cost and the strong requirements on infrastructure. To address this problem, we are developing a permanent magnet-based head scanner that is affordable (<50,000 EUR) and portable. Here, we report on the first observations of magnetic resonance in our custom magnet array with a field strength of 59 mT. Using custom made volume coils, we observe using Hahn echo (Spin echo) and CPMG pulse sequences. We discuss the step towards 2D imaging using rotating spatially encoding magnetic fields (rSEMs) and show simulations that indicate this is feasible in our setup. Finally, we discuss the technical challenges that still have to be overcome to turn this prototype into a diagnostic device for those in need.
Supervisor: Webb, Andrew
Faculty: Faculty of Science
Department: Physics (Master)
Specialisation: Quantum Matter & Optics
ECTS Credits: 5
Handle: http://hdl.handle.net/1887/63184
 

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