Morphologic evaluation of the inferior alveolar nerve in patients with sensory disorders by high-resolution 3D volume rendering magnetic resonance neurography on a 3.0-T system

Terumitsu, Makoto; Seo, Kenji; Matsuzawa, H; Yamazaki, Manabu; Kwee, Ingrid L.; Nakada, Tsutomu

doi:10.1016/j.tripleo.2010.09.002

Cited by 29 publications

(21 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…14,15 Without the high-signal background from the CSF, however, heavily T2-weighted imaging has not proved to be very useful in visualizing the extracranial segments of the cranial nerves. Detecting the remaining peripheral segments can be achieved with pre-and postcontrast high-resolution 3D T1-weighted images (gradient-recalled acquisition in steady state, fast-spoiled gradient recalled-echo, or MPRAGE) with and without fat suppression, [9][10][11][12][13]16,18,23 but detecting the entire course of the extracranial branches of the cranial nerves is still very challenging. The 3D-DESS-WE sequence, commonly used in musculoskeletal imaging, was recently applied for visualization of the intraparotid facial nerve and is quite successful.…”

Section: Discussionmentioning

confidence: 99%

Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

Fujii

Fujita

Yang

et al. 2015

American Journal of Neuroradiology

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

Fujii

Fujita

Yang

et al. 2015

American Journal of Neuroradiology

View full text Add to dashboard Cite

show abstract

“…The main advantage of a high magnetic field system (3.0 T) is the higher signalto-noise ratio, which provides significantly superior spatial resolution compared with standard magnetic field strength of 1.5-T. 23 Routine conventional MRI techniques to depict peripheral nerves have mainly consisted of two-dimensional MRI with relatively thick slice, using maximum intensity projection. [24][25][26] By contrast, 3D sequences, such as T 1 weighted fast SPGR, 27,28 are more accurate for depicting fine nervous structures such as IAN. T 2 weighted 3D fast imaging employing steady-state acquisition has been widely used in the evaluation of the cranial nerves.…”

Section: Discussionmentioning

confidence: 99%

“…The studies on the evaluation of the course and injury of the IAN are few, and no studies in the early MRI evaluation of IAN sensory disorders after the extraction of the mandibular third molar have been reported. 27,28,34 The aim of the present study was to evaluate the use of 3.0 T MRI in the prognosis of sensory disorders after mandibular third molar extraction in the early postoperative period. A large number of patients who underwent mandibular third molar removal were studied, a total of 343 IANs were evaluated.…”

Section: Discussionmentioning

confidence: 99%

3.0 Tesla MRI in the early evaluation of inferior alveolar nerve neurological complications after mandibular third molar extraction: a prospective study

Cassetta¹,

Barchetti

Sorrentino

et al. 2014

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Objectives: To evaluate the use of 3.0 T MRI in the prognosis of inferior alveolar nerve (IAN) sensory disorders after mandibular third molar extraction, in the early post-operative period. Methods: 343 IANs were examined before and 3 days after surgery. Two radiologists evaluated the course of the nerve and the relative signal intensity (RSI). Cohen's kappa coefficient (k) and intraclass correlation coefficient (ICC) were used to evaluate the interobserver (k 5 0.891) and intra-observer variability (ICC 5 0.927; 0.914, respectively). The IANs were divided into four groups on the basis of neurosensory disorders recovery time. ANOVA was used to evaluate the differences among the RSIs of the four groups, and multiple comparisons were performed with Tukey's range test. Results: No differences in the course of IANs were found before and after surgery. In 280 IANs, no iatrogenic paraesthesia was found (Group A). 63 IANs showed a neurosensory impairment. 38 IANs showed recovery of post-operative paraesthesia at 3-month follow-up (Group B). 16 IANs showed a full recovery of iatrogenic paraesthesia at 6-month follow-up (Group C). Seven IANs displayed a full recovery at 12-month follow-up and two IANs showed persistence of neurosensory disorders at 18-month follow-up (Group D). The one-way ANOVA results indicated statistically significant difference among all groups (p , 0.05), except between Groups C and D (p 5 0.504). Conclusions: The early evaluation of RSI values represents a valid tool to determine the prognosis of IAN sensory disorders after mandibular third molar extraction.

show abstract

“…The cause of her predominantly sensory impairment is unknown, although the median and ulnar nerves serve both sensory and motor functions. In addition to conventional nerve conduction tests, recent advances in noninvasive techniques such as neurography (Terumitsu et al, 2011) and diffusionweighted images (Ueki et al, 2006;Urakawa et al, 2011) will elucidate further detail regarding the aetiology of peripheral neuropathy in diphtheria.…”

Section: Discussionmentioning

confidence: 99%

Subcutaneous abscess formation in the upper extremity caused by toxigenic Corynebacterium ulcerans

Urakawa

Seto

Yamamoto

et al. 2013

Journal of Medical Microbiology

View full text Add to dashboard Cite

Corynebacterium ulcerans is attracting attention as an emerging zoonosis that causes lymphadenitis, dermatitis and respiratory infections. We report here what appears to be the first case of subcutaneous abscess formation in the upper extremity due to toxigenic C. ulcerans in Japan. Awareness of the fact that C. ulcerans can cause a subcutaneous, elastic-hard, lessmobile mass with heat, redness and pain in the extremities is important for differential diagnosis. IntroductionCorynebacterium ulcerans is known as an emerging zoonosis that causes cutaneous infection, sinusitis, tonsillitis, pharyngitis, pneumonia and peritonitis (Dias et al., 2011). However, to the best of our knowledge, C. ulcerans has not been reported to cause subcutaneous abscess in the extremities. Therefore, clinicians encountering a subcutaneous mass in the extremities are unlikely to consider subcutaneous abscesses due to C. ulcerans as a differential diagnosis. This could lead to a delay in diagnosis and treatment, and in the worst scenario, it may result in a fatal diphtheria-like disease (Mattos-Guaraldi et al., 2008;Putong et al., 2011).Here, we report the diagnosis and treatment of a patient with a subcutaneous abscess in the upper extremity due to C. ulcerans and discuss the clinical characteristics useful for differential diagnosis. Case reportIn December 2011, a 37-year-old Japanese woman was referred to Tsuruoka Municipal Shonai Hospital, in Tsuruoka, Japan, with a painful mass in her right elbow. The patient had no cardiac symptoms. Her past medical history was unremarkable. Three days before the current hospital visit, she experienced swelling and itching on the medial side of her right elbow. Within a few days, a hot, red, painful mass rapidly formed subcutaneously.Physical examination revealed redness and local heat on the surface of the skin over the mass. The mass was approximately 4 cm in size, elastic hard and less mobile, and caused pain and tenderness. No radiating pain was produced on tapping on the mass (Tinel's sign). Laboratory tests revealed an increase in C-reactive protein levels (2.3 mg dl 21) and a white blood cell count in the normal range (7500 mm 23 ). Radiography did not reveal calcification within the lesion. On magnetic resonance imaging, a subcutaneous soft tissue mass (27622626 mm in size) was observed on the medial side of her elbow; it exhibited iso-signal intensity on T1-weighted images (Fig. 1a) and inhomogeneous high-signal intensity on T2-weighted images (Fig. 1b). Following intravenous administration of gadopentetate dimeglumine, ring enhancement was seen on T1-weighted images (Fig. 1c).Fine-needle aspiration biopsy was performed. No pus was aspirated, but small fragments of tissue were obtained. The tissue fragments were sent for pathological analysis and microbiological diagnosis. Histopathological examination showed no malignancy, but neutrophils and histiocytes were present in the specimen. Bacterial cultures were negative under aerobic conditions. In January 2012, the patient underwent surgery...

show abstract

Morphologic evaluation of the inferior alveolar nerve in patients with sensory disorders by high-resolution 3D volume rendering magnetic resonance neurography on a 3.0-T system

Cited by 29 publications

References 17 publications

Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

3.0 Tesla MRI in the early evaluation of inferior alveolar nerve neurological complications after mandibular third molar extraction: a prospective study

Subcutaneous abscess formation in the upper extremity caused by toxigenic Corynebacterium ulcerans

Contact Info

Product

Resources

About