| Spin lock and magnetization transfer MR imaging of local liver lesions. | |
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MedLine Citation:
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PMID: 9665546 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present study was designed to evaluate tissue contrast characteristics obtained with the spin-lock (SL) technique by comparing the results with those generated with a magnetization transfer(MT)-weighted gradient echo [GRE, echo-time (TE)=40 ms] sequence. Twenty-eight patients with hepatic hemangiomas (n=14), or metastatic liver lesions (n=14) were imaged at 0.1 T by using identical imaging parameters. Gradient echo, single-slice off-resonance MT, and multiple-slice SL sequences were obtained. SL and MT-effects were measured from the focal liver lesions and from normal liver parenchyma. In addition, tissue contrast values for the liver lesions were determined. Statistically significant difference between the SL-effects of the hemangiomas and metastases, and also between the MT-effects of the lesions was observed (p < 0.02). Tissue contrast values for the lesions proved to be quite similar between the SL and MT techniques. Our results indicate that at 0.1 T multiple-slice SL imaging provides MT based tissue contrast characteristics in tissues rich in protein with good imaging efficiency and wide anatomical coverage, and with reduced motion and susceptibility artifacts. |
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Authors:
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J T Halavaara; R E Sepponen; A E Lamminen; T Vehmas; S Bondestam |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Magnetic resonance imaging Volume: 16 ISSN: 0730-725X ISO Abbreviation: Magn Reson Imaging Publication Date: 1998 May |
Date Detail:
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Created Date: 1998-09-15 Completed Date: 1998-09-15 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8214883 Medline TA: Magn Reson Imaging Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 359-64 Citation Subset: IM |
Affiliation:
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Department of Radiology, Helsinki University Central Hospital, Finland. jhalavaa@helsinki.fi |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Artifacts Biopsy, Needle Breast Neoplasms / pathology Colonic Neoplasms / pathology Diagnosis, Differential Female Follow-Up Studies Hemangioma / pathology* Humans Liver Neoplasms / pathology*, secondary Magnetic Resonance Imaging / methods* Male Middle Aged Prospective Studies Reproducibility of Results |
| Comments/Corrections | |
Erratum In:
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Magn Reson Imaging 1998 Nov;16(9):1146 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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