| Image quality using dynamic MR imaging of the temporomandibular joint with true-FISP sequence. | |
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MedLine Citation:
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PMID: 17510538 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We evaluated the quality of dynamic magnetic resonance (MR) imaging of the temporomandibular joint (TMJ) in 20 normal volunteers with 40 TMJs. To confirm TMJ, we obtained static proton density weighted images (PDWI) before performing dynamic MR imaging with true-fast imaging in a steady-state precession (true-FISP) sequence. Four sequences of the first 10 volunteers were examined to determine the optimal sequence. The 4 sequences included the integrated parallel acquisition technique (iPAT) and/or fat saturation technique. The optimal sequence was then determined and performed in all 20 volunteers. The quality of imaging was evaluated, especially with respect to the conspicuity of the articular disk, mandibular condyle, articular eminence and lateral pterygoid muscle. One of 3 confidence levels was assigned for this evaluation. Neither iPAT nor fat saturation obtained the best quality imaging. Detection rates in the 20 volunteers were 83% for the articular disk, 95% for the mandibular condyle, 96% for the articular eminence and 7.5% for the lateral pterygoid muscle. We recommend dynamic MR imaging of the TMJ with the true-FISP sequence using neither iPAT nor fat saturation. Nevertheless, dynamic MR imaging was inferior to static imaging in detecting the articular disk and still requires improvement. |
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Authors:
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Yoko Shimazaki; Kazuhiro Saito; Satoshi Matsukawa; Ryuichi Onizawa; Fumio Kotake; Ryota Nishio; Kimihiko Abe |
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Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine Volume: 6 ISSN: 1347-3182 ISO Abbreviation: Magn Reson Med Sci Publication Date: 2007 |
Date Detail:
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Created Date: 2007-05-18 Completed Date: 2007-08-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101153368 Medline TA: Magn Reson Med Sci Country: Japan |
Other Details:
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Languages: eng Pagination: 15-20 Citation Subset: IM |
Affiliation:
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Department of Radiology, Tokyo Medical University. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Humans Image Enhancement / methods* Image Interpretation, Computer-Assisted / methods* Magnetic Resonance Imaging / methods* Middle Aged Signal Processing, Computer-Assisted* Temporomandibular Joint / anatomy & histology* |
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