Anatomy of the Semicircular Canals


Angles Between the Canals



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Angles Between the Canals


Given the plane and normal vectors of the canals, one can readily compute the relative orientations of the canals. The ratio of two planes is their intersection, which is also the ratio of their normal vectors. We can simply compute the ratios of the canal axes and obtain the angular excursions and the axes of the intersection. The following table summarizes the results of a number of such calculations.


Canals

Ratio

Angle

Intersection

Blanks et al. ‘75

Horizontal

to

Anterior



112.216°





Horizontal

to

Posterior



95.948°





Anterior

to

Posterior



86.2003°





Right Posterior to

Left Anterior



23.2833°





Right Anterior

to

Left Posterior



23.2833°





Right Horizontal

to

Left Horizontal



18.3942°









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