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Variability of vestibular aqueduct measurements among axial, single-oblique and double-oblique computed tomography images

Published online by Cambridge University Press:  18 September 2018

Y Quan ,
X J Gao ,
J Liu ,
R Z Gong ,
Q Wang ,
H Liang ,
J L Fu  and
Q Cheng
Y Quan
Affiliation:
CT room, Shanxian Central Hospital, affiliated with Jining Medical College, Heze, PR China
X J Gao
Affiliation:
Center of Laboratory Medicine, Yuhuangding Hospital, Yantai, PR China
J Liu
Affiliation:
Department of Radiology, Weihai Central Hospital, affiliated with Weifang Medical College, Weihai, PR China
R Z Gong*
Affiliation:
Shandong Medical Imaging Research Institute, Shandong University, Jinan, PR China
Q Wang
Affiliation:
CT room, Shanxian Central Hospital, affiliated with Jining Medical College, Heze, PR China
H Liang
Affiliation:
CT room, Shanxian Central Hospital, affiliated with Jining Medical College, Heze, PR China
J L Fu
Affiliation:
CT room, Shanxian Central Hospital, affiliated with Jining Medical College, Heze, PR China
Q Cheng
Affiliation:
CT room, Shanxian Central Hospital, affiliated with Jining Medical College, Heze, PR China
*
Author for correspondence: Dr Ruozhen Gong, Shandong Medical Imaging Research Institute, Shandong University, No. 324, Jingwu Road, Jinan, Shandong 250021, PR China E-mail: 2665709947@qq.com Fax: +86 530 469 1777
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Abstract

Objective

To investigate the morphology and dimensions of the vestibular aqueduct on axial, single-oblique and double-oblique computed tomography images.

Methods

The computed tomography temporal bone scans of 112 patients were retrospectively evaluated. Midpoint and opercular measurements were performed using axial, single-oblique and double-oblique images. Morphometric analyses were also conducted. The vestibular aqueduct sizes on axial, single-oblique and double-oblique images were compared.

Results

At the midpoint, the mean (± standard deviation) vestibular aqueduct measured 0.61 ± 0.23 mm, 0.74 ± 0.27 mm and 0.82 ± 0.38 mm on axial, single-oblique and double-oblique images, respectively; at the operculum, the vestibular aqueduct measured 0.91 ± 0.30 mm, 1.11 ± 0.45 mm and 1.66 ± 1.07 mm on the respective images. The co-efficients of variation of the vestibular aqueduct measured at the midpoint were 37.4 per cent, 36.5 per cent and 47.5 per cent on axial, single-oblique and double-oblique images, respectively; at the operculum, the measurements were 33.0 per cent, 40.5 per cent and 64.5 per cent. Regarding morphology, the vestibular aqueduct was fissured (33.5 per cent), tubular (64.3 per cent) or invisible (2.2 per cent).

Conclusion

The morphology and dimensions of the vestibular aqueduct were highly variable among axial, single-oblique and double-oblique images.

Keywords

Vestibular AqueductTomography, X-Ray ComputedTemporal BonesDiagnostic ImagingDimensional Measurement Accuracy
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 132 , Issue 10 , October 2018 , pp. 875 - 880
Copyright
Copyright © JLO (1984) Limited, 2018 

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Footnotes

Dr R Gong takes responsibility for the integrity of the content of the paper

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