Application of 3D MR Neurogram for Intraparotid Facial Nerves Evaluation

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-02-01

Study Completion Date

2026-06-30

Brief Summary

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Parotid neoplasm consists of a wide range of benign and malignant lesions, and parotidectomy has been the mainstay for management of these neoplasms. Within the parotid gland there are branches of the intra-parotid facial nerves, which are tiny in calibre and are prone to injury to injury during operation. It has been reported in recent retrospective view that the incidence of temporary and permanent facial nerve injury were 9.2% and 5.2% respectively, the risk of which increased with old age, malignant tumour and revision surgery. Traditional the incidental of facial nerve injury is reduced by intra-operative facial nerve monitoring and surgical magnification, while imaging has limited role in aiding this purpose. However with advancement in MRI technique high resolution three-dimensional sequences (i.e. neurogram sequences) are available for better visualization of branches of facial nerves. The investigators would therefore aim to demonstrate additional efficacy of these techniques and also to compare with conventional 3D post-contrast anatomical imaging studies in the localization and visualization of the facial nerve branches in patients with tumour. With better pre-operative imaging, the investigators hope to reduce the chance of facial nerve injury in these patients.

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Detailed Description

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Conditions

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Parotid Neoplasms

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Imaging group

patients with parotid tumour being imaged

Group Type EXPERIMENTAL

Magnetic Resonance Imaging on 3T scanner (Magnetom Prisma, SIemens) with dedicated neurogram sequences (Constructive interference in steady state - CISS; Dual Echo Steady State - DESS)

Intervention Type DIAGNOSTIC_TEST

The MRI examination will consist of both conventional sequences for diagnosis of salivary gland neoplasms (including DWI and DCE-MRI), together with additional neurogram sequences. (please refer to attached protocol for list of sequences)

Interventions

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Magnetic Resonance Imaging on 3T scanner (Magnetom Prisma, SIemens) with dedicated neurogram sequences (Constructive interference in steady state - CISS; Dual Echo Steady State - DESS)

The MRI examination will consist of both conventional sequences for diagnosis of salivary gland neoplasms (including DWI and DCE-MRI), together with additional neurogram sequences. (please refer to attached protocol for list of sequences)

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Consecutive patients with parotid tumour diagnosed on other imaging modalities (such as ultrasonography or computed tomography), with or without cytological diagnosis from fine needle aspiration, will be recruited from the ear, nose and throat specialty clinic.

Exclusion Criteria

* Patients who are contraindicated to magnetic resonance imaging (such as due to underlying MRI incompatible metallic implants)
* Patient who are contraindicated to MRI contrast agents (such as advanced renal failure or previous severe allergic reaction)
* Patients who cannot cooperate for MRI scanning.
* Patients show are unable to provide informed consent.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No