| Internally stabilized spine: optimal choice of frequency-encoding gradient direction during MR imaging minimizes susceptibility artifact from titanium vertebral body screws. | |
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MedLine Citation:
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PMID: 9205258 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In 18 vertebral bodies with titanium fixation screws and in a phantom model, visualization of the vertebral body marrow was improved and susceptibility artifact was reduced on T1-weighted spin-echo magnetic resonance images when the direction of the frequency-encoding gradient was parallel to the long axis of the screw. A perpendicular direction improved image quality only when the region of interest was adjacent to the tip of the screw. In the phantom, the length of the screw was statistically significantly increased and the width and area were reduced (P <.001) when the gradient was parallel to the long axis of the screw. |
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Authors:
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V I Frazzini; N J Kagetsu; C E Johnson; S Destian |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Radiology Volume: 204 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1997 Jul |
Date Detail:
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Created Date: 1997-07-17 Completed Date: 1997-07-17 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: 268-72 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, St Luke's-Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, NY 10025, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Artifacts* Bone Screws* Female Humans Magnetic Resonance Imaging / methods*, standards Magnetics Male Middle Aged Phantoms, Imaging Prospective Studies Reproducibility of Results Single-Blind Method Spinal Diseases / pathology*, surgery Spinal Fusion* / instrumentation Titanium* |
| Chemical | |
Reg. No./Substance:
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7440-32-6/Titanium |
| Comments/Corrections | |
Comment In:
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Radiology. 1998 Apr;207(1):275-6
[PMID:
9530329
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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