Document Detail

Visualization of the articular disk of the temporomandibular joint in near-real-time MRI: feasibility study.
MedLine Citation:
PMID:  15378254     Owner:  NLM     Status:  MEDLINE    
While static MRI of the TMJ is the method of choice to evaluate the articular disk (AD), dynamic MRI so far has failed to display the AD. The capability of a modified True-FISP sequence to visualize the AD in dynamic near-real-time imaging (NRTI) was evaluated. Twelve healthy subjects and 17 patients were investigated. Besides static routine imaging, sagittal NRTI of both TMJs was performed with a True-FISP sequence at 1.5 T with TE/TR=1.84/3.68 ms. Two temporal resolutions (250/500 ms) were tested. The quality of the visualization of the AD was rated on a four-point scale (1= very good to 4= poor visualization) by two observers in consensus. ADs of the volunteers were visualized with high quality in all stages of movement (score: 1.69). In patients with internal derangement, disk-motion was clearly depicted, including fast reposition movements. Due to degenerative changes of the AD, the quality of the depiction in patients was slightly lower (score: 2.4). According to the preliminary results of this feasibility study, the suggested NRTI True-FISP sequence is capable of visualizing the entire motion of the AD of the TMJ in normal and pathologic stages with high quality. Further studies are needed to prove the clinical usefulness of this new technique.
Nasreddin D Abolmaali; Jan Schmitt; Wolfram Schwarz; Douglas E Toll; Stefan Hinterwimmer; Thomas J Vogl
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Publication Detail:
Type:  Journal Article     Date:  2004-07-29
Journal Detail:
Title:  European radiology     Volume:  14     ISSN:  0938-7994     ISO Abbreviation:  Eur Radiol     Publication Date:  2004 Oct 
Date Detail:
Created Date:  2004-09-20     Completed Date:  2004-12-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9114774     Medline TA:  Eur Radiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1889-94     Citation Subset:  IM    
Copyright Information:
Copyright 2004 Springer-Verlag
Department of Diagnostic and Interventional Radiology, J.W. Goethe University, Theodor Stern Kai 7, Frankfurt/Main, Germany.
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MeSH Terms
Computer Systems
Dislocations / pathology,  physiopathology
Feasibility Studies
Image Enhancement / methods
Image Processing, Computer-Assisted / methods*
Magnetic Resonance Imaging, Cine / methods*
Mandibular Condyle / pathology
Range of Motion, Articular / physiology
Synovial Fluid
Temporomandibular Joint Disk / pathology*,  physiopathology
Temporomandibular Joint Disorders / pathology,  physiopathology

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