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Low-field MRI at high magnetic field instability and inhomogeneity conditions

Rodriguez, Gonzalo Gabriel et al · Frontiers Media · 2023

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Author / responsible party
Rodriguez, Gonzalo Gabriel et al
Publisher
Frontiers Media
Year
2023
ISSN
2296-424X
ISSN
2296-424X
Language
English

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Understanding the effects of the magnetic field time instabilities in magnetic resonance imaging (MRI) is fundamental for the success of portable and low-cost MRI hardware based on electromagnets. In this work we propose a magnetic field model that considers the field instability in addition to the inhomogeneity. We have successfully validated the model on signals acquired with a commercial NMR instrument. It was used to simulate the image defects due to different types of instability for both the spin-echo and the gradient-echo sequences. We have considered both random field fluctuations, and an instability having a dominant harmonic component. Strategies are suggested to minimize the artifacts generated by these instabilities. Images were acquired using a home-made MRI relaxometer to show the consistency of the analysis. Fil: Rodriguez, Gonzalo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina Fil: Schürrer, Clemar A.. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina

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APA 7

Rodriguez, G. G. E. A. (2023). Low-field MRI at high magnetic field instability and inhomogeneity conditions. http://hdl.handle.net/11336/254862

MLA

Rodriguez, Gonzalo Gabriel et al. "Low-field MRI at high magnetic field instability and inhomogeneity conditions." 2023. http://hdl.handle.net/11336/254862.

Chicago

Rodriguez, Gonzalo Gabriel et al. 2023. "Low-field MRI at high magnetic field instability and inhomogeneity conditions.". http://hdl.handle.net/11336/254862.

Harvard

Rodriguez, G. G. E. A. 2023, Low-field MRI at high magnetic field instability and inhomogeneity conditions, Frontiers Media, available at: http://hdl.handle.net/11336/254862 [Accessed 7 Aug. 2026].

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Title
Low-field MRI at high magnetic field instability and inhomogeneity conditions
Author / contributors
Rodriguez, Gonzalo Gabriel et al
Publisher
Frontiers Media
Publication year
2023
ISSN
2296-424X
ISSN
2296-424X
Language
English

Subjects

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low-field; field instability; MRI; electromagnets; https://purl.org/becyt/ford/1.3; https://purl.org/becyt/ford/1
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