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Temporal bone image quality in CBCT: Device and protocol variations.

Seyed Hossein Razavi¹, Mohammad Poormohammadi¹, Arezoo Ansarilari¹

¹Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Cochlear Implants International

|March 29, 2025

Summary

This summary is machine-generated.

This study evaluated radiation protocols for cone-beam computed tomography (CBCT) temporal bone imaging. Optimal protocols vary by CBCT brand, necessitating further research to minimize patient radiation dose.

Keywords:

Temporal Bone, CBCT, Radiation Protocol, Image Quality, Iinner Ear

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Area of Science:

Radiology
Medical Imaging
Dental Imaging

Background:

Temporal bone imaging is common, with increasing use of CBCT over CT.
Optimizing CBCT radiation protocols is crucial for diagnostic quality and patient safety.

Purpose of the Study:

To determine optimal radiation conditions for temporal bone imaging across different CBCT devices.
To minimize patient radiation dose while maintaining diagnostic image quality.

Main Methods:

A dry human skull was imaged using 6 radiation protocols on 4 CBCT devices.
Image quality of key temporal bone structures was assessed by 3 observers using a 4-point scale.
Statistical analysis included Kappa coefficient, Kruskal-Wallis, and Mann-Whitney tests.

Main Results:

No significant difference in mean scores between protocols for Acteon and NewTom devices.
Protocol 1 was recommended for Kodak devices; Protocol 3 for Planmeca devices for temporal bone imaging.

Conclusions:

Optimal radiation protocols for temporal bone imaging differ among CBCT brands.
Further research is needed to establish universal optimal radiation conditions and reduce societal radiation dose.
CBCT's unilateral temporal bone imaging capability is underutilized.