High-Resolution MRI of the Intraparotid Facial Nerve Based on a Microsurface Coil and a 3D Reversed Fast Imaging with Steady-State Precession DWI Sequence at 3T

Chu, Jianping; Zhou, Zhen; Gao, Hong; Guan, Jian; Li, S.; Rao, Liyun; Quanfei, Meng; Yang, Zhiyun

doi:10.3174/ajnr.a3472

Cited by 43 publications

(16 citation statements)

References 10 publications

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“…Extracranial imaging of the nerve is not well documented or performed. Chu et al have reported excellent imaging of the extracranial portion of the facial nerve by using high‐resolution MRI based on a micro surface coil; however, these techniques are not readily available at most institutions. When these modalities are refined and in more general use, the findings reported here can be more accurately defined and assessed.…”

Section: Discussionmentioning

confidence: 99%

Displacement of the Facial Nerve by Deep Parotid Lobe Lesions in the Pediatric Population

Maddalozzo

Johnston

Isaac

et al. 2019

Laryngoscope Investig Oto

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Objectives To describe and investigate facial nerve displacement in deep lobe parotid lesions in children and to determine clinical and radiographic predictors of abnormal facial nerve position. Methods Retrospective case review of children who underwent total parotidectomy for deep lobe parotid lesions at a tertiary care center between January 2014 and December 2017. Aberrant facial nerve trajectory was defined as ascension of the nerve at an angle of 45° or greater. Elongation was defined as the main trunk >2 cm in length. Patient demographics, radiographic, pathologic results, postoperative nerve weakness, and intraoperative nerve findings were collected. Wilcoxon rank‐sum test and Fisher's exact test were used to assess the associations between variables of interest and facial nerve position. Results A total of 20 patients were included. The mean age was 7.7 ± 5 years. The most common pathologies were lymphatic malformation, pleomorphic adenoma, and first branchial cleft cyst. Twelve out of twenty (60.0%) patients had abnormal intraoperative facial nerve position. There was no significant difference in distribution of pathologies between those with or without an abnormal intraoperative nerve position (P = .41). Neither radiographic lesion size nor distance between the lesion and proximal portion of the facial nerve (mastoid tip) were associated with abnormal facial nerve position intraoperatively. Conclusion Pediatric deep lobe parotid lesions can displace the facial nerve and distort its anatomy in a posterior lateral direction, in approximately 60% of patients. Statistical analysis of increased numbers of patients to further define predictors of aberrant nerve course is warranted. Level of Evidence 4.

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Section: Discussionmentioning

confidence: 99%

Displacement of the Facial Nerve by Deep Parotid Lobe Lesions in the Pediatric Population

Maddalozzo

Johnston

Isaac

et al. 2019

Laryngoscope Investig Oto

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“…A second limitation was the disuse of a surface coil, which could achieve better visualization of the intraparotid facial nerve. 20,21 However, we found that using the surface coil was not feasible in routine clinical practice due to its time-consuming and cumbersome application. Despite the lack of a surface coil, this study still demonstrated good diagnostic performance using a standard, commercially available head and neck coil, and the acquisition time of the 3D-DESS-WE sequence was relatively short, maintaining its feasibility for routine clinical practice.…”

Section: Discussionmentioning

confidence: 99%

Localization of Parotid Gland Tumors in Relation to the Intraparotid Facial Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

Fujii

Fujita

Kanazawa

et al. 2019

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE: Reliable preoperative facial nerve mapping may help avoid or minimize facial nerve injury during parotid tumor resection. The purpose of this study was to investigate the diagnostic performance of the 3D double-echo steady-state with water excitation sequence in localizing parotid gland tumors through direct visualization of the intraparotid facial nerve in comparison with indirect methods of estimating the facial nerve location. MATERIALS AND METHODS: We retrospectively reviewed 91 parotid gland tumors in 90 patients who underwent surgical resection and preoperative MR imaging, including the 3D double-echo steady-state with water excitation sequence. The tumor locations were categorized as deep or superficial on the basis of direct and 3 indirect methods: the facial nerve line, retromandibular vein, and Utrecht line. Surgical localization was considered the criterion standard. The diagnostic performance for localizing deep lobe lesions using direct and indirect methods was calculated and compared using the McNemar test. RESULTS: Surgical localization confirmed 75 superficial lesions and 16 deep lesions. The interobserver variability of the 3D double-echo steady-state with water excitation sequence was excellent (ϭ 0.870). The diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value for localizing deep lobe lesions using the 3D double-echo steady-state with water excitation method were 97.8%, 87.5%, 100%, 100%, and 97.4%, respectively. These findings were significantly higher than the facial nerve line in sensitivity, the retromandibular vein in sensitivity, and the Utrecht line in accuracy and specificity (P Ͻ .05). Overall, the direct method was the most accurate, sensitive, and specific in localizing parotid gland tumors. CONCLUSIONS: We can achieve higher diagnostic performance in localizing parotid gland tumors by directly visualizing the intraparotid facial nerve using the 3D double-echo steady-state with water excitation sequence compared with indirect methods. ABBREVIATIONS: 3D-DESS-WE ϭ 3D double-echo steady-state with water excitation; FNL ϭ facial nerve line; RMV ϭ retromandibular vein; UL ϭ Utrecht line

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“…Recently, Chu et al (42) reported combined use of microsurface coils and a 3D PSIF sequence for high-resolution imaging of the intraparotid facial nerve. These peripheral trunks and branches are best seen on thick-slab sagittal MIP images (Fig 5).…”

Section: Facial Nervementioning

confidence: 99%

MR Neurographic Evaluation of Facial and Neck Pain: Normal and Abnormal Craniospinal Nerves below the Skull Base

Chhabra¹,

Bajaj²,

Wadhwa³

et al. 2018

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Cranial nerve disease outside the skull base is a common cause of facial and/or neck pain, which causes significant disability for patients and frustration for clinicians. Neuropathy in this region can be traumatic, idiopathic, or iatrogenic secondary to dental and surgical procedures. MR neurography is a modification of conventional MRI techniques dedicated to evaluation of peripheral nerves and is being increasingly used for imaging of peripheral neuropathies at various sites in the body. MR neurography facilitates assessment of different causes of craniofacial pain and cranial nerves and allows elegant depiction of a multitude of regional neuropathies. This article discusses the anatomy, pathologic conditions, and imaging findings of the commonly implicated but difficult to image infratentorial nerves, such as the peripheral trigeminal nerve and its branches, facial nerve, glossopharyngeal nerve, vagus nerve, hypoglossal nerve, and greater and lesser occipital nerves. RSNA, 2018.

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High-Resolution MRI of the Intraparotid Facial Nerve Based on a Microsurface Coil and a 3D Reversed Fast Imaging with Steady-State Precession DWI Sequence at 3T

Cited by 43 publications

References 10 publications

Displacement of the Facial Nerve by Deep Parotid Lobe Lesions in the Pediatric Population

Displacement of the Facial Nerve by Deep Parotid Lobe Lesions in the Pediatric Population

Localization of Parotid Gland Tumors in Relation to the Intraparotid Facial Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

MR Neurographic Evaluation of Facial and Neck Pain: Normal and Abnormal Craniospinal Nerves below the Skull Base

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