| MR angiography: present and future. | |
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MedLine Citation:
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PMID: 8517285 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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MR angiography is a rapidly evolving technique for noninvasive vascular imaging. Since 1985, when it was first shown to be clinically feasibls, the imaging techniques and hardware used for MR angiography have greatly improved. No longer is MR angiography a mere academic curiosity; it is already widely used to diagnose stenoses of carotid bifurcations and intracranial aneurysms. MR angiography supplements, and in some cases supplants, duplex sonography and CT for the study of suspected venous thrombosis in the chest, abdomen, and pelvis. With continuing technical developments, MR angiography most likely will replace conventional X-ray angiography in the presurgical workup of patients who are candidates for carotid endarterectomy or liver transplantation. Even MR angiography of the coronary arteries, considered implausible just a few years ago, has become feasible with the implementation of fast imaging techniques that suppress artifacts from respiratory and cardiac motion. Nonetheless, substantial problems remain that must be overcome before the full clinical potential of MR angiography can be realized. Despite the superficial similarities between MR angiograms and conventional angiograms, fundamentally different features of blood vessels are depicted. MR angiography is susceptible to a variety of artifacts that can exaggerate or simulate pathologic changes. The patient's cooperation is essential. The spatial resolution of MR angiography is inferior to its conventional counterpart, although the gap is being narrowed. This article reviews the basic principles of MR angiography and flow artifacts and surveys existing and future clinical applications. |
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Authors:
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R R Edelman |
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Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 161 ISSN: 0361-803X ISO Abbreviation: AJR Am J Roentgenol Publication Date: 1993 Jul |
Date Detail:
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Created Date: 1993-07-22 Completed Date: 1993-07-22 Revised Date: 2008-02-15 |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1-11 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Beth Israel Hospital, Boston, MA 02215. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Artifacts Blood Flow Velocity Blood Vessels / anatomy & histology* Humans Magnetic Resonance Imaging* Vascular Diseases / diagnosis |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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