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Analysis of the coplanarity of functional pairs of semicircular canals using three-dimensional images reconstructed from temporal bone magnetic resonance imaging

Published online by Cambridge University Press:  03 March 2015

D-K Kim ,
D-R Kim ,
S H Jeong ,
G J Kim ,
K-H Chang  and
B-C Jun
D-K Kim
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
D-R Kim
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
S H Jeong
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
G J Kim
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
K-H Chang
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
B-C Jun*
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
*
Address for correspondence: Dr B-C Jun, Department of Otolaryngology, Head and Neck Surgery, Uijeongbu St Mary Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 137-701, Republic of Korea Fax: +82-31-847-0038 E-mail: otojun@catholic.ac.kr
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Abstract

Objectives:

This study was conducted to investigate the angles and orientation of semicircular canals, and the coplanarity of functional canal pairs.

Methods:

Fluid signals in semicircular canals were reconstructed with three-dimensional reconstruction software using 20 temporal bone magnetic resonance images of normal subjects. The angles between each pair of semicircular canals were measured.

Results:

The mean angles between the anterior and horizontal semicircular canal plane, the horizontal and posterior semicircular canal plane, and the anterior and posterior semicircular canal plane were 83.7°, 82.5° and 88.4°, respectively. Pairs of contralateral synergistic canal planes were formed 15.1° between the right and left horizontal semicircular canal planes, 21.2° between the right anterior and left posterior semicircular canal, and 21.7° between the left anterior and right posterior semicircular canal.

Conclusion:

Each semicircular canal makes an almost right angle with other canals, but synergistically acting functional canal pairs of both ears do not lie in exactly the same plane.

Keywords

Semicircular CanalsOrientationMRI Scans
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 129 , Issue 5 , May 2015 , pp. 430 - 434
Copyright
Copyright © JLO (1984) Limited 2015 

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