D-K Kim1, D-R Kim1, S H Jeong1, G J Kim1, K-H Chang1, B-C Jun1. 1. Department of Otolaryngology,Head and Neck Surgery,College of Medicine, The Catholic University of Korea,Seoul,Republic of Korea.
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.
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.
Authors: Seyed-Ahmad Ahmadi; Theresa Marie Raiser; Ria Maxine Rühl; Virginia Lee Flanagin; Peter Zu Eulenburg Journal: Sci Rep Date: 2021-02-08 Impact factor: 4.379