| Indirect measurement of the temporomandibular joint disc elasticity with magnetic resonance imaging. | |
| | |
MedLine Citation:
|
PMID: 21960399 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Objectives: The radiological evaluation of the temporomandibular joint (TMJ) consists of demonstrating the morphological features of the disc and the condyle in closed and open mouth positions using MRI. We aimed to determine elasticity of the disc by measuring the amount of elongation during mouth opening. Methods: The study population included 49 patients. Coronal T(1) and multiplane oblique T(2) weighted gradient recalled echo sequences were acquired in open and closed mouth positions. Biconcave TMJ disc lengths were measured on sagittal oblique images in both positions. Elongation ratio (ER) was calculated for each patient. According to the findings, TMJs are classified into subgroups: normal (N), dislocated with reduction (DWR), pure DWR (p-DWR), DWR with additional findings (DWR-a) and dislocated without reduction (DWOR). Statistical analysis was performed using the χ(2) test and receiver operating characteristic analysis. Results: Out of 98 discs, 22 of them were evaluated as N, 60 as DWR (28 p-DWR, 32 DWR-a) and 16 as DWOR. There was no significant difference among the disc lengths in three subgroups at the closed mouth position (P = 0.15), whereas there was significant difference in the open mouth position (P = 0.0001). There was significant difference among subgroups as far as ER is concerned (P < 0.05). Conclusions: ER is a strong indicator of elasticity. Compared with the N group, elasticity of the disc was not significantly different in the p-DWR group but the disc elasticity was very degraded in DWR-a and in DWOR. A negative conversion or one smaller than 1.4 mm means a compromised disc, although sometimes it will possess normal anatomical configurations or signal characteristics. |
| | |
Authors:
|
D Yildirim; G Dergin; C Tamam; S Moroglu; B Gurses |
Related Documents
:
|
22569149 - Size-dependent passage of liposome nanocarriers with preserved posttransport integrity ... 17538279 - Venous reflux on carotid computed tomography angiography: relationship with left-arm in... 20368649 - Gadolinium-enhanced magnetic resonance angiography for pulmonary embolism: a multicente... 20861769 - Three-dimensional multiphase time-resolved low-dose contrast-enhanced magnetic resonanc... 10751479 - Aortic aneurysmal disease: assessment of stent-graft treatment-ct versus conventional a... 21498309 - The ct flare response of metastatic bone disease in prostate cancer. 16688039 - Determinants of spontaneous resorption of intervertebral disc herniations. 12423389 - Interictal epileptiform discharges relate to 1h-mrs-detected metabolic abnormalities in... 16084829 - Pectoral nerve conduction studies: technique in healthy subjects and evaluation of brac... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Dento maxillo facial radiology Volume: 40 ISSN: 0250-832X ISO Abbreviation: Dentomaxillofac Radiol Publication Date: 2011 Oct |
Date Detail:
|
Created Date: 2011-09-30 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7609576 Medline TA: Dentomaxillofac Radiol Country: England |
Other Details:
|
Languages: eng Pagination: 422-8 Citation Subset: D |
Affiliation:
|
Dr Duzgun Yildirim, Kasimpasa Military Hospital, Department of Radiology, 34 440, Beyoglu, Istanbul, Turkey. E-mail: yildirimduzgun@yahoo.com. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Quantitative evaluation of vascularity within cervical lymph nodes using Doppler ultrasound in patie...
Next Document: Evaluation of two imaging techniques: near-infrared transillumination and dental radiographs for the...