The Journal of International Advanced Otology
Original Article

Cone-Beam CT Compared to Multi-Slice CT for the Diagnostic Analysis of Conductive Hearing Loss: A Feasibility Study

1.

Department of Otolaryngology-Head and Neck Surgery, Ear & Hearing, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, Amsterdam Public Health Research institute, Amsterdam, The Netherlands

2.

Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center – Location VUmc, Amsterdam, The Netherlands

3.

Department of Oral and Maxillofacial Radiology Academic Center for Dentistry Amsterdam, Amsterdam, The Netherlands

4.

Department of Physics and Medical Technology, Amsterdam University Medical Center – Location VUmc, Amsterdam, The Netherlands

J Int Adv Otol 2020; 16: 222-226
DOI: 10.5152/iao.2020.5883
Read: 27 Downloads: 7 Published: 28 July 2020

OBJECTIVES: Multislice computed tomography (MSCT) is commonly used as a diagnostic tool for patients with a conductive hearing loss. Recent studies indicate that cone-beam computed tomography (CBCT) may be used as a low-radiation dose alternative for temporal bone imaging. This study compares image quality and radiation dose between CBCT and MSCT when assessing anatomical landmarks related to conductive hearing loss.

MATERIALS and METHODS: Five human cadaver heads (10 ears) were imaged on the NewTom 5G CBCT and the Discovery CT750 HD MSCT. Visibility of 16 anatomical landmarks of the middle and inner ear was assessed by two observers on a 4-point Likert scale. Furthermore, effective radiation dose was compared, and contrast-to-noise ratio and spatial resolution were measured with a phantom head.

RESULTS: Image quality of CBCT was assessed as superior to MSCT. Effective radiation dose of the high-resolution CBCT protocol was 30.5% of the clinical MSCT dose. High-resolution CBCT was reported as having a higher spatial resolution and superior contrast-to-noise perception in comparison with MSCT.

CONCLUSION: High-resolution CBCT was evaluated as superior to MSCT in the assessment of structures related to conductive hearing loss. Furthermore, CBCT imaging resulted in a considerably lower effective radiation dose.

Cite this article as: Kemp P, Van Stralen J, De Graaf P, Berkhout E, Van Horssen P, Merkus P. Cone-Beam CT Compared to Multi-Slice CT for the Diagnostic Analysis of Conductive Hearing Loss: A Feasibility Study. J Int Adv Otol 2020; 16(2): 222-6.

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ISSN1308-7649 EISSN 2148-3817