CT Temporal Bone Anatomical Variations

NCT06597877 | Not Yet Recruiting

• 1 other identifier: CT Temporal bone variations
• Study Type: observational
• Target: 100
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study aimed to identify the prevalence of normal variations of temporal bone anatomy on high-resolution CT imaging and discuss their clinical importance

Conditions

Temporal Bone Abnormalities

Outcome Measures

Primary Outcomes (1)

• Radiological evaluation of the anatomical variations of the Temporal bone

  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

Interventions

CT RADIATION

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.

Eligibility Criteria

• Age: 12 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• 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.

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• Assiut University: lead

Related Publications (5)

• Walshe P, McConn Walsh R, Brennan P, Walsh M. The role of computerized tomography in the preoperative assessment of chronic suppurative otitis media. Clin Otolaryngol Allied Sci. 2002 Apr;27(2):95-7. doi: 10.1046/j.1365-2273.2002.00538.x.

  PMID: 11994113 BACKGROUND

• Visvanathan V, Morrissey MS. Anatomical variations of the temporal bone on high-resolution computed tomography imaging: how common are they? J Laryngol Otol. 2015 Jul;129(7):634-7. doi: 10.1017/S0022215115001115. Epub 2015 Jun 15.

  PMID: 26072959 BACKGROUND

• Atilla S, Akpek S, Uslu S, Ilgit ET, Isik S. Computed tomographic evaluation of surgically significant vascular variations related with the temporal bone. Eur J Radiol. 1995 May;20(1):52-6. doi: 10.1016/0720-048x(95)00619-2.

  PMID: 7556255 BACKGROUND

• Tatlipinar A, Tuncel A, Ogredik EA, Gokceer T, Uslu C. The role of computed tomography scanning in chronic otitis media. Eur Arch Otorhinolaryngol. 2012 Jan;269(1):33-8. doi: 10.1007/s00405-011-1577-z. Epub 2011 Mar 24.

  PMID: 21431950 BACKGROUND

• Jackler RK, Dillon WP, Schindler RA. Computed tomography in suppurative ear disease: a correlation of surgical and radiographic findings. Laryngoscope. 1984 Jun;94(6):746-52. doi: 10.1288/00005537-198406000-00004.

  PMID: 6727511 BACKGROUND

Study Officials

• Mohamed Mahmoud Roshdy, Professor

  Assiut University

  STUDY DIRECTOR

Central Study Contacts

Nihal Kamal Sayed, Resident

CONTACT

+2001101987694; kamalnehal87@gmail.com

Mohamed Abdelhai Elhussieny

CONTACT

+2001067485885

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Nehal Kamal Sayed

Study Record Dates

• First Submitted: September 12, 2024
• First Posted: September 19, 2024
• Study Start: October 1, 2024
• Primary Completion (Estimated): September 1, 2026
• Study Completion (Estimated): September 1, 2026
• Last Updated: September 19, 2024

Record last verified: 2024-08

Data Sharing

• IPD Sharing: Will not share