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 language | English |
|---|---|
| Pages (from-to) | 229-233 |
| Number of pages | 5 |
| Journal | Acta Radiologica |
| Volume | 52 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Mar 1 2011 |
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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; Hiwatashi, Akio; 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 journal › Article
}
TY - JOUR
T1 - Sensorineural hearing loss
T2 - There is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT
AU - Yamashita, Koji
AU - Yoshiura, Takashi
AU - Hiwatashi, Akio
AU - Tuvshinjargal, Dashjamts
AU - Kamano, Hironori
AU - Inoguchi, Takashi
AU - Honda, Hiroshi
PY - 2011/3/1
Y1 - 2011/3/1
N2 - 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 ( 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.
AB - 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 ( 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=79959263142&partnerID=8YFLogxK
U2 - 10.1258/ar.2010.100324
DO - 10.1258/ar.2010.100324
M3 - Article
C2 - 21498353
AN - SCOPUS:79959263142
VL - 52
SP - 229
EP - 233
JO - Acta Radiologica
JF - Acta Radiologica
SN - 0284-1851
IS - 2
ER -