| Fundamentals of NMR imaging. | |
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MedLine Citation:
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PMID: 6559128 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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NMR imaging is a new kind of emission tomography that utilizes the resonance frequency radiation emitted by atomic nuclei, in particular the hydrogen nuclei, present in the human body. This radiation is emitted when these nuclei are in a state of vibration under the influence of a static magnetic field and after excitation by an external RF radiation pulse. By introducing well-known field inhomogeneities the frequency of the emitted radiation can be made spatially dependent. Through spectroscopic analyses and mathematical procedures the spatial distribution of the emission intensity, the NMR image, can be reconstructed. Characteristic differences in concentration and resonance properties of the hydrogen nuclei result in strong contrasts in the image between the various tissues, as well as between lesions and normal tissue. Due to a choice of imaging techniques and time parameter settings the NMR image contrasts can be varied widely. Shifting or rotation of the image plane is performed electronically without changing the patient's position. Multiple parallel slices as well as a 3-dimensional volume can be imaged in one measuring procedure. |
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Authors:
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A L Luiten |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Diagnostic imaging in clinical medicine Volume: 53 ISSN: 0254-881X ISO Abbreviation: Diagn Imaging Clin Med Publication Date: 1984 |
Date Detail:
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Created Date: 1984-02-27 Completed Date: 1984-02-27 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8400594 Medline TA: Diagn Imaging Clin Med Country: SWITZERLAND |
Other Details:
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Languages: eng Pagination: 4-12 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adipose Tissue
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anatomy & histology Connective Tissue / anatomy & histology Humans Magnetic Resonance Spectroscopy / diagnostic use*, instrumentation Muscles / anatomy & histology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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