Utility of frequency-selective fat saturation T2-weighted MR images for the detection of joint effusion in the temporomandibular joint.

2002 ◽  
Vol 31 (5) ◽  
pp. 305-312 ◽  
Author(s):  
T Tanaka ◽  
Y Morimoto ◽  
S Masumi ◽  
K Tominaga ◽  
T Ohba
Keyword(s):  
Temporomandibular Joint ◽  
Joint Effusion ◽  
Mr Images ◽  
Fat Saturation ◽  
Frequency Selective

scholarly journals Utility of frequency-selective fat saturation MR images for the detection of joint effusion in the temporomandibular joint

2003 ◽  
Vol 57 (4) ◽  
pp. 115
Author(s):  
Tatsurou Tanaka ◽  
Yasuhiro Morimoto ◽  
Shinji Kito ◽  
Sachiko Okabe ◽  
Yuji Shinohara ◽  
...  
Keyword(s):  
Temporomandibular Joint ◽  
Joint Effusion ◽  
Mr Images ◽  
Fat Saturation ◽  
Frequency Selective

scholarly journals An ultrasound protocol for temporomandibular joint in juvenile idiopathic arthritis: a pilot study

2021 ◽  
pp. 20200399
Author(s):  
Ingrid Tonni ◽  
Andrea Borghesi ◽  
Silvia Tonesi ◽  
Giulia Fossati ◽  
Francesca Ricci ◽  
...  
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Temporomandibular Joint ◽  
Joint Effusion ◽  
Control Group ◽  
Ultrasound Images ◽  
Healthy Children ◽  
Mr Images ◽  
Group A ◽  
Group B ◽  
Spearman Test

Objectives: As it is well known, the diagnosis of temporomandibular joint (TMJ) involvement in patients affected by Juvenile Idiopathic Arthritis (JIA) is important to avoid the impairment of mandibular growth. In this context, Magnetic Resonance Imaging (MRI) is the gold-standard for detection of TMJ involvement, however it is expensive and requires patients’ collaboration. The aim of this study was to evaluate if ultrasound may be used as an alternative tool to investigate the acute signs of TMJ involvement in JIA patients. Methods: Lateral periarticular space (LPAS) and joint effusion were evaluated by ultrasound in a study Group A of 8 JIA children (11.6±3.5 years old) with 14 TMJs involved, as confirmed by MRI, and in a control Group B of 7 healthy children (9.3±1.2 years old) without temporomandibular disorders (TMD). The LPAS width values were compared between the two groups using the Mann–Whitney test. The ultrasound images of the JIA group were then matched with the corresponding MR images; the Spearman Rank Correlation test and the Bland–Altman test were used to evaluate the differences. Results: The LPAS values in Group A were statistically significantly higher than those in Group B (p < 0.001). There was no overlap of the LPAS values confidence intervals (CIs) between the two groups. No signs of joint effusion were identified in groups A and B. The Spearman test applied to the values of LPAS measured in ultrasound and the corresponding MR images showed a proportional positive correlation with a ρ of 0.623 and a p < 0.05. Conclusions: Ultrasound can detect differences in the TMJ features between JIA patients and healthy patients and it might be used as a follow-up tool in the assessment of TMJ involvement in subject affected by JIA.

Significance of Frequency-Selective Fat Saturation T2-Weighted MR Images for the Detection of Bone Marrow Edema in the Mandibular Condyle

CRANIO® ◽  
2004 ◽  
Vol 22 (2) ◽  
pp. 115-123 ◽  
Author(s):  
Yasuhiro Morimoto ◽  
Tatsurou Tanaka ◽  
Shin-ichi Masumi ◽  
Kazuhiro Tominaga ◽  
Tomoaki Shibuya ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Edema ◽  
Mandibular Condyle ◽  
Mr Images ◽  
Fat Saturation ◽  
Frequency Selective ◽  
Marrow Edema

Temporomandibular Joint Imaging

2020 ◽  
pp. 582-697
Author(s):  
Mark Piper, DMD MD
Keyword(s):  
Magnetic Resonance ◽  
Soft Tissue ◽  
Temporomandibular Joint ◽  
Mr Images ◽  
Anatomical Structures ◽  
Temporomandibular Joints ◽  
Key Concepts ◽  
Masticatory System ◽  
The Relationship ◽  
Insight Into

Computerized tomography (CT) and magnetic resonance (MR) imaging of the temporomandibular joint are often not a routine part of a dental patient's pain and clinical evaluation. As a result, the most poorly understood region within the masticatory system is the temporomandibular joint foundation. Unfortunately, patient care and occlusal management are often compromised because of a lack of insight into the relationship between the anatomy of the temporomandibular joints and the occlusion. This chapter's four distinct sections review the key concepts about the temporomandibular joint foundation anatomical structures, detail structurally intact and structurally altered temporomandibular joint anatomy, clarify how structurally altered temporomandibular joints influence occlusal function, and classify the stages of temporomandibular joint structural degeneration. The concept of joint-based malocclusion is explored with numerous temporomandibular joint foundation anomalous software renderings, and sample CT and MR images, which together illustrate in detail how soft tissue and bony abnormalities in a structurally altered temporomandibular joint can create distortions in the occlusion. Lastly, the chapter addresses the specific requirements a clinician must technically master to perform a comprehensive CT or MR examination.

scholarly journals Comparison of the effectiveness of high resolution ultrasound with MRI in patients with temporomandibular joint dısorders

2019 ◽  
Vol 48 (5) ◽  
pp. 20180349 ◽  
Author(s):  
Dilek Yılmaz ◽  
Kıvanç Kamburoğlu
Keyword(s):  
High Resolution ◽  
Temporomandibular Joint ◽  
Predictive Value ◽  
Intraclass Correlation ◽  
Temporomandibular Joint Disorders ◽  
Joint Effusion ◽  
Significance Level ◽  
Disc Position ◽  
Ultrasound Measurements ◽  
Sensitivity Specificity

Objectives: To assess the effectiveness of a high resolution ultrasound for temporomandibular joint (TMJ) evaluation in comparison to MRI in patients with TMJ disorders. Methods: Our study comprised 50 patients (35 female and 15 male) with a mean age of 30.61. Clinical examination was performed. Bilateral imaging of TMJ was conducted by using a high-resolution ultrasound and 1.5 Tesla MR. Diagnostic accuracy of ultrasound was assessed for disc displacement and joint effusion in comparison to MRI. Sensitivity (Se), specificity (Sp), positive predictive value (PPV), negative predictive value (NPV), and accuracy (Ac) were calculated for ultrasound. Measurements were compared by Bland & Altman and intraclass correlation coefficient (ICC). Significance level was set at p < 0.05. Results: Most frequent complaints were noise 42 (84%) and 34 (68%) pain. For disc position assessment with ultrasound for both sides and closed-open mouth, sensitivity, specificity, PPV, NPV and accuracy ranged between, 0.88 – 1, 0.60 – 0.87, 0.70 – 0.97, 0.75 – 1, and 0.84 – 0.98, respectively. For the diagnosis of effusion with ultrasound for both sides, sensitivity, specificity, PPV, NPV and accuracy ranged between 0.65 – 0.81, 0.91 – 1, 0.96 – 1, 0.45 – 0.46 and 0.72 – 0.84, respectively. ICC values calculated for intraobserver agreement for right and left TMJ for all measurements were found to be statistically significant (p < 0.001). ICC values ranged between 0.964 and 0.995 suggesting excellent correlation among ultrasound and MRI. In general, for ultrasound measurements we found a mean difference ranging between −0.182 and +0.130 mm in comparison to MRI. Conclusion: Ultrasound can be suggested as an adjunct to common imaging modalities in the assessment of TMJ.

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