Sensorineural hearing loss

There is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT

Koji Yamashita, Takashi Yoshiura, Hiwatashi Akio, Dashjamts Tuvshinjargal, Hironori Kamano, Takashi Inoguchi, Hiroshi Honda

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Background: Inner ear malformations may cause sensorineural hearing loss (SNHL). However, the correlation between the small lateral semi-circular canal (LSCC) and SNHL is controversial. Purpose: To determine whether there is a correlation between the two using CT-based measurement. Material and Methods: We retrospectively reviewed the high-resolution CT images of the temporal bone obtained from consecutive patients. A total 136 ears of 68 patients (25 men and 43 women; age range 20-85 years, mean 49.8 years) were included in this study. Patients whowere clinically suspected to have otosclerosis were also excluded. Two radiologists independently measured the width and cross-sectional area of the bony island of LSCC. We evaluated the correlation between LSCC bone island width or cross-sectional area and hearing level in all cases using Pearson correlation co-efficients. In addition, we compared hearing levels among the patient group with normal-sized LSCC (≥mean-SD), small LSCC (<mean-SD) and very small LSCC (<mean-2SD) as defined by the width and cross-sectional area of the bony island using Student's t-test. Results: A total 136 ears of 68 patients (25 men and 43 women; age range 20-85 years, mean 49.8 years) were included in this study. No significant correlation was shown between LSCC bony island width or crosssectional area and hearing level (P > 0.05). No significant difference in hearing levels were found among groups of the normal-sized, small and very small LSCC (P > 0.05). Conclusion: We conclude that there is no correlation between isolated small LSCC and SNHL.

Original languageEnglish
Pages (from-to)229-233
Number of pages5
JournalActa Radiologica
Volume52
Issue number2
DOIs
Publication statusPublished - Mar 1 2011

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Sensorineural Hearing Loss
Temporal Bone
Hearing
Otosclerosis
Inner Ear
Islands
Ear
Bone and Bones

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Cite this

Sensorineural hearing loss : There is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT. / Yamashita, Koji; Yoshiura, Takashi; Akio, Hiwatashi; Tuvshinjargal, Dashjamts; Kamano, Hironori; Inoguchi, Takashi; Honda, Hiroshi.

In: Acta Radiologica, Vol. 52, No. 2, 01.03.2011, p. 229-233.

Research output: Contribution to journalArticle

Yamashita, Koji ; Yoshiura, Takashi ; Akio, Hiwatashi ; Tuvshinjargal, Dashjamts ; Kamano, Hironori ; Inoguchi, Takashi ; Honda, Hiroshi. / Sensorineural hearing loss : There is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT. In: Acta Radiologica. 2011 ; Vol. 52, No. 2. pp. 229-233.
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