| Mathematical Modeling and Numerical Simulation of Magnetic Susceptibility Artifacts in Magnetic Resonance Imaging. | |
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MedLine Citation:
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PMID: 11264858 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The technique used to recognise information in Magnetic Resonance Imaging (MRI) is based on electromagnetic fields. A linearly varying field (around 10(-2) Tesla per meter) is added to a strong homogeneous magnetic field (order of magnitude of approximately one Tesla). When these fields are disturbed by the presence of a paramagnetic material, in the sample for instance, the resulting image is usually distorted, these distortions being termed artifacts. Our goal is to present a method, assuming the field disturbances are known, to construct the resulting images. A mathematical model of the MRI process is developed. The way the images are distorted in intensity and shape is explained and an algorithm to simulate magnetic susceptibility artifacts is deduced. |
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Authors:
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S. Balac; G. Caloz |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Computer methods in biomechanics and biomedical engineering Volume: 3 ISSN: 1476-8259 ISO Abbreviation: Comput Methods Biomech Biomed Engin Publication Date: 2000 |
Date Detail:
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Created Date: 2001-Mar-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9802899 Medline TA: Comput Methods Biomech Biomed Engin Country: - |
Other Details:
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Languages: ENG Pagination: 335-349 Citation Subset: - |
Affiliation:
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Département de Mathématiques, Université de Bretagne Occidentale, 29285 Brest, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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