Cone-beam CT in the Diagnosis and Surgical Treatment of Otosclerosis.

NCT ID: NCT05921578

Last Updated: 2025-04-04

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

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-05-17

Study Completion Date

2025-12-31

Brief Summary

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Our studies will systematically investigate and establish evidence on whether Cone-beam computed tomography (CBCT) of the temporal bone could be used in the diagnosis and treatment of otosclerosis and in the post-operative follow-up after stapedotomy.

Detailed Description

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Cone-beam CT has a high resolution and a low effective radiation dose to the patient when compared to conventional CT-scans. Surgical treatment of otosclerosis is primarily by stapedotomy. The decision of surgical treatment is currently based on the history, clinical examination, and audiological tests, but stapes fixation can only be confirmed per-operatively.

This protocol includes the following overall aims for the following studies:

* To establish the diagnostic precision of clinical CBCT in diagnosing otoslcerosis, i.e., the sensibility and specificity for our scanning protocols (n=50).
* To determine if CBCT can support the clinicians' decision making in the diagnosis of otosclerosis (n=100).
* To assess the value of CBCT in the planning of stapes surgery. Two groups will be established: CBCT-based pre-operative planning (e.g., prothesis parameters and anatomic landmarks) and no-planning (standard treatment). Patients will be allocated by 1:1 randomization (n=75).
* To assess the value of CBCT in the post-operative follow-up of 2-3 weeks, 2-3 months, and 12 months. Follow-up includes a clinical examination, audiometry, CBCT (block-randomized), and patient questionnaires (audiometry and patient questionnaire not at the "2-3 weeks" control) (n=75).
* To assess the value of pre-preoperative CBCT on post-surgical result at follow up (2-3 weeks, 2-3, months and 12-months) (n=75).

Conditions

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Otosclerosis Cone Beam Computed Tomography Stapes Fixation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Participants

Study Groups

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Routine diagnostic workup

Group Type NO_INTERVENTION

No interventions assigned to this group

Routine diagnostic workup + pre-operative CBCT-based planning

Group Type EXPERIMENTAL

Pre-operative planning based on CBCT

Intervention Type DIAGNOSTIC_TEST

Pre-operative planning based on CBCT

Interventions

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Pre-operative planning based on CBCT

Pre-operative planning based on CBCT

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Adults (\>18 years of age).
* Referred to our department suspected for otosclerosis.
* Consents to participation in the project.

Exclusion Criteria

* A history of surgical treatment for otosclerosis (ipsilateral ear).
* A history of tympanoplasty type 2-4 (ipsilateral ear).
* Other competing middle-ear diseases (ipsilateral ear).


Exclusion:

\- Intraoperative findings not supporting otosclerosis.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Rigshospitalet, Denmark

OTHER

Sponsor Role lead

Responsible Party

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Steven Andersen

M.D., PhD, Senior Researcher

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Rigshospitalet

Copenhagen, , Denmark

Site Status RECRUITING

Countries

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Denmark

Central Contacts

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Bilal H Akram

Role: CONTACT

+4535451973

Steven AW Andersen

Role: CONTACT

Other Identifiers

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H-22067452

Identifier Type: -

Identifier Source: org_study_id

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