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Visualization of anterior disc displacement in temporomandibular disorders on contrast-enhanced magnetic resonance imaging: comparison with T2-weighted, proton density-weighted, and precontrast T1-weighted imaging.

AbstractOBJECTIVE:
To compare postcontrast T1-weighted imaging (T1WI+) with precontrast T1-weighted (T1WI-), T2-weighted (T2WI), and proton density-weighted imaging (ProWI) in depiction of the anterior disc displacement (ADD) in temporomandibular disorders (TMDs).
STUDY DESIGN:
A total of 120 joints with TMD were included in this study. Qualitatively, Receiver operating characteristic analysis was performed. Quantitatively, the ratio of the intensity in the retrodiscal tissue to intensity in the disc (intensity ratio) was measured.
RESULTS:
One reader achieved superior performance in visualization of ADD with T1WI+ than with the other sequences. The other reader showed superiority with T1WI+ rather than T2WI or T1WI-. The intensity ratio on T1WI+ was significantly higher than the intensity ratio on other sequences. On T1WI,+ the intensity ratio in the joints with ADD was significantly higher than that in the joints without ADD.
CONCLUSION:
Postcontrast T1-weighted imaging can improve the visualization of ADD in TMDs.
AuthorsNoriaki Tomura, Takahiro Otani, Komei Narita, Ikuo Sakuma, Satoshi Takahashi, Jiro Watarai, Takayoshi Ohnuki
JournalOral surgery, oral medicine, oral pathology, oral radiology, and endodontics (Oral Surg Oral Med Oral Pathol Oral Radiol Endod) Vol. 103 Issue 2 Pg. 260-6 (Feb 2007) ISSN: 1528-395X [Electronic] United States
PMID17234545 (Publication Type: Comparative Study, Evaluation Study, Journal Article)
Chemical References
  • Contrast Media
  • Gadolinium DTPA
Topics
  • Analysis of Variance
  • Area Under Curve
  • Contrast Media
  • Female
  • Gadolinium DTPA
  • Humans
  • Joint Dislocations (pathology)
  • Magnetic Resonance Imaging (methods)
  • Male
  • ROC Curve
  • Retrospective Studies
  • Temporomandibular Joint Disc (pathology)
  • Temporomandibular Joint Disorders (pathology)

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