Clinical trial · Interventional
Effect of Implant Position on Magnetic Resonance Image Distortion
The Effect of Changes in Head Position on Magnetic Resonance Image Distortion in Patients With Auditory Implants
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Patients with Neurofibromatosis type 2 (NF2) almost always develop acoustic neuromas in both ears. As a result of the tumours themselves or the treatment of the tumours, many patients become profoundly deaf in both ears. It is possible to restore a degree of hearing by placing a hearing implant in the brainstem adjacent to the hearing pathways within the brain. This is termed an auditory brainstem implant (ABI). The aim of this study is to find the optimum head position in relation to the MRI magnet field, which would produce least area of image distortion in patients with ABIs. This will be of benefit in optimising the MR imaging in future patients with implants.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Neurofibromatosis Type 2 | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| MR imaging | Device | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- NF2 who has an auditory implant
- interventionNames
- Device: MR imaging
Primary outcomes (1)
- measure
- To study the effect of magnet orientation in auditory brainstem implants/ cochlear implants in determining the size of signal void seen on MRI scanning.
- timeFrame
- 1 year
Secondary outcomes (1)
- measure
- To identify if there is an angle at which the signal void is minimised
- timeFrame
- 1 year
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: \- Any patient over the age of 18 with NF2 who has an auditory implant (cochlear or auditory brainstem implant) in situ and requires MRI scanning. Exclusion Criteria: Children under the age of 18 years Claustrophobia Bilateral implants Contraindications and relative contraindications for MRI (as per the Radiology Department MRI protocol) including: Pacemaker Certain metallic heart valves Ferromagnetic implanted materials and foreign bodies
References
Publications (0)
Data not yet available