CT Temporal Bone Anatomical Variations

September 12, 2024 updated by: Nihal Samal Sayed, Assiut University
This study aimed to identify the prevalence of normal variations of temporal bone anatomy on high-resolution CT imaging and discuss their clinical importance

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

The temporal bone has a difficult anatomical structure for otologists and radiologists.In addition to its anatomical complexity, variations in the three-dimensional relationships of structures within the temporal bone need additional attention. The assessment of these relationships is of primary importance in diagnosis, treatment planning, and preoperative management. High-resolution computed tomography (CT) helps locate the anatomical structures within the temporal bone. Preoperative knowledge of the courses of vascular structures within and neighboring the temporal bone is of primary importance. If not detected preoperatively, variations in the localizations of the vascular structures may lead to disastrous consequences during surgery. The surgically important positions of the vascular structures that are generally accepted as normal variants are, High-resolution CT has made it possible for clinicians to study middle- and inner-ear pathology before undertaking surgery. This is particularly useful when the disease has altered the anatomy, resulting in complications such as a lateral canal fistula and facial canal or tegmen erosion there have been several studies reporting the value of high-resolution CT for investigations of cholesteatoma, temporal bone tumors, and congenital anomalies studies on the prevalence of normal anatomical variations of the temporal bone as the use of high-resolution CT imaging for temporal bone investigations is now widespread, it is necessary for the investigating otologist to be aware of common anatomical variations and their clinical implications

Study Type

Observational

Enrollment (Estimated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

  • Name: Mohamed Abdelhai Elhussieny
  • Phone Number: +2001067485885

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients with unilateral ear pathology will be randomly assigned to do CT temporal bone, The presence of five variants was determined. These variants were: a high dehiscent jugular bulb, an anteriorly located sigmoid sinus, a deep sinus tympani, an enlarged cochlear aqueduct, and an enlarged internal auditory meatus (IAM). A GE LightSpeed 16, four-slice, helical CT scanner (Fairfield, Connecticut, USA) was used for all patients. The scan parameters were as follows: 1 mm slices, smart Ma (50-250 Ma), 120 kV, 0.8-second rotation time, 0.562:1 pitch factor, and 5.62 mm rotation speed. All scans covered an area from 1 cm inferior to the mastoid tip to 1 cm superior to the petrous temporal bone.

Description

Inclusion Criteria:

- All adult patients presented with any middle ear pathology indicated for temporal bone radiological evaluation and were willing to participate in the study

Exclusion Criteria:

- 1- patients with temporal bone neoplastic disorders distorting normal temporal bone anatomy.

2- Extensive trauma to the temporal bone 3- Patients with congenital anomalies and craniofacial disproportions 4- Patients with mastoid surgery 5- Patients in whom radiological evaluation is contraindicated

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Radiological evaluation of the anatomical variations of the Temporal bone
Time Frame: Baseline
This study aimed to identify the prevalence of normal variations of temporal bone anatomy on high-resolution CT imaging and discuss their clinical importance This study aimed to identify the prevalence of normal variations of temporal bone anatomy on high-resolution CT imaging and discuss their clinical importance This study aimed to identify the prevalence of normal variations of temporal bone anatomy on high-resolution CT imaging and discuss their clinical importance
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assiut University

Investigators

  • Study Director: Mohamed Mahmoud Roshdy, Professor, Assiut University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

October 1, 2024

Primary Completion (Estimated)

September 1, 2026

Study Completion (Estimated)

September 1, 2026

Study Registration Dates

First Submitted

September 12, 2024

First Submitted That Met QC Criteria

September 12, 2024

First Posted (Estimated)

September 19, 2024

Study Record Updates

Last Update Posted (Estimated)

September 19, 2024

Last Update Submitted That Met QC Criteria

September 12, 2024

Last Verified

August 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CT Temporal bone variations

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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