| Intracranial lesions: flow-related enhancement on MR images using time-of-flight effects. | |
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MedLine Citation:
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PMID: 3786730 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Many physico-anatomic variables and instrument parameters influence the relative magnetic resonance signal intensity of vascular channels. The interaction of these mechanisms is complex, but their composite effects can be accounted for by two main categories of flow phenomena: time-of-flight effects and spin-phase changes. Of these two mechanisms only the time-of-flight effect known as flow-related enhancement produces augmentation of intravascular signal. Flow-related enhancement can potentially provide positive contrast of diagnostic value in terms of anatomic depiction of vascular detail as well as physiologic characterization of blood flow. The authors have used a single-section, selectively irradiated, spin-echo pulse sequence to maximize flow-related enhancement within a variety of intracranial lesions, as a supplement to their regular imaging. The technique was found to be diagnostically useful in improving the conspicuity of vascular lesions, in determining vessel patency, in distinguishing flow void from calcification, and in obtaining semiquantitative information about flow dynamics. |
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Authors:
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W Kucharczyk; W M Kelly; D O Davis; D Norman; T H Newton |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Radiology Volume: 161 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1986 Dec |
Date Detail:
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Created Date: 1986-12-29 Completed Date: 1986-12-29 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0401260 Medline TA: Radiology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 767-72 Citation Subset: AIM; IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Brain Diseases
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diagnosis* Brain Neoplasms / diagnosis Cerebrovascular Disorders / diagnosis Humans Magnetic Resonance Spectroscopy / diagnostic use*, methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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