@article{9ff15fab12cc4a85a058765f1e188608,
title = "Electromagnetics in Magnetic Resonance Imaging",
abstract = "Magnetic resonance imaging (MRI) is a powerful new imaging method, which produces cross-sectional tomographic and three-dimensional images similar to those of x-ray computed tomography (CT). However, rather than relying on harmful ionizing radiation, MRI is based on the interaction between RF fields and certain atomic nuclei in the body, when they are in the presence of a strong magnetic field. An MRI system is one of the few complete systems in which the design relies heavily upon a knowledge of electromagnetics. In this article, we give a tutorial on the electromagnetic analysis and design of three key components of an MRI system, namely, the magnet, the gradient coil, and the radiofrequency (RF) coil. We will also discuss the analysis and characterization of the interactions of RF electromagnetic fields with biological subjects.",
keywords = "Biological effects of electromagnetic radiation, Biomedical magnetic resonance imaging, Coils, Electromagnets, Gradient coil, Numerical analysis, Radio-frequency coil, Superconducting magnets",
author = "Jin, {Jian Ming}",
note = "Funding Information: He joined the faculty of the Department of Electrical and Computer Engineering at the University of Illinois at Urbana-Champaign (UIUC) in 1993, after serving as a Senior Scientist at Otsuka Electronics (USA), Inc., Fort Collins, Colorado. Currently, he is an Associate Professor of Electrical and Computer Engineering and Associate Director of the Center for Computational Electromagnetics at UIUC. He is also an affiliate member of the Magnetic Resonance Engineering Laboratory in the Beckman Institute of UIUC. He serves as an Associate Editor of the IEEE Transactions on Antennas and Propagation and as a member of the Editorial Board of Electromagnetics Journal. His name is listed in the university{\textquoteright}s List of Excellent Teachers. He has published over 70 articles in refereed journals and several book chapters; authored The Finite Element Method in Electromagnetics (New York, Wiley, 1993) and Electvomagnetic Analysis and Design in Magnetic Resonance Imaging (Boca Raton, Florida, CRC Press, 1998); and co-authored Computation of Special Functions (New York, Wiley, 1996). His current research interests include computational electromagnetics, magnetic resonance imaging, gradient and RF coil design, bioelectromagnetics, scattering and antenna analysis, and electromagnetic compatibility. He has published papers on RF coil analysis, design, and optimization and RF fields in the human body in MRI, and taught a course on “Magnetic Resonance Principles and Instrumentation.” Dr. Sin is a member of Commission B of USNC/URSI, Tau Beta Pi, Applied Computational Electromagnetics Society, International Society for Magnetic Resonance in Medicine, and a Senior Member of the IEEE. He served as the Symposium Co-Chairman and Technical Program Chairman of the 1997 and 1998 International Symposia on Applied Computational Electromagnetics, respectively. He is a recipient of a 1994 National Science Foundation Young Investigator Award, and a 1995 Office of Naval Research Young Investigator Award. He also received a 1997 Junior Xerox Research Award from the UIUC College of Engineering. In 1998, he was appointed as the first Henry Magnuski Scholar in the Department of Electrical and Computer Engineering. Funding Information: This work was supported in part by the National Science Foundation under grant NSF ECE 94-57735. Some numerical results were calculated by my students, Mr. J. Chen and Ms. Z. Feng. Useful suggestions on this article were made by Mr. M. Kowalski and Mr. D. S. Weile. The head model was provided by Dr. P. J. Dimbylow, of the National Radiological Protection Board, UK.",
year = "1998",
month = dec,
doi = "10.1109/74.739187",
language = "English (US)",
volume = "40",
pages = "7--22",
journal = "IEEE Antennas and Propagation Magazine",
issn = "1045-9243",
publisher = "IEEE Computer Society",
number = "6",
}