Gradient Coil Design in Permanent Magnet MRI |
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| Affiliation: | 1. School of Health and Biomedical Sciences, RMIT University, Victoria, 3083, Australia;2. School of Chemistry, The University of Melbourne, Victoria, 3010, Australia;3. Alfred Hospital Radiation Oncology, Melbourne, Australia;4. Dept. of Clinical Radiology, Hiroshima Int. University, Hiroshima, 739-452, Japan;1. Radiotherapy Department, Nasser Institute, Cairo, Egypt;2. National Cancer Institute, Cairo University, Egypt;3. Biophysics Department, Faculty of Science, Cairo University, Egypt;1. Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80208, United States;2. Center for EPR Imaging in Vivo Physiology, University of Denver, Denver, CO 80208, United States;3. School of Engineering and Computer Science, University of Denver, Denver, CO 80208, United States;4. Center for Biomedical Engineering and Technology, University of Maryland, School of Medicine, Baltimore, MD 21201, United States;5. Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD 21201, United States;6. Department of Physiology, University of Maryland, School of Medicine, Baltimore, MD 21201, United States;1. Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang 330063, PR China;2. Key Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics of the Chinese Academy of Sciences, Shanghai 200083, China;1. Department of Oncology and Radiotherapy, University Clinical Center in Gdansk, Debinki 7, 80-952, Gdansk, Poland;2. Department of Physics and Biophysics, Medical University of Gdansk, Debinki 1, 80-211, Gdansk, Poland;3. Department of Oral and Maxillofacial Surgery, University Clinical Center in Gdansk, Debinki 7, 80-952, Gdansk, Poland;4. Department of Pediatric Dentistry, Medical University of Gdansk, Orzeszkowej 18, 80-208, Gdansk, Poland |
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| Abstract: | Based on target field method, the article designs gradient coils for a permanent MRI magnet model. By simulating, winding and testing, the result verifies the validity and feasibility of target field method used in gradient coils design of permanent magnet MRI; moreover, shielded coils can restrain eddy current and can be designed based on target field method easily. The simulated results show that the effect of restraining eddy current is notable. So, the permanent magnetic MRI gradient coil can be designed by target field method. Gradient coils generate the linearly gradient field; and shielded coils restrain the eddy current. |
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