Table 3.

Magnetic resonance imaging grading qualitative scales proposed by Barath [11] and modified by Bernaerts [13] for evaluation of the cochlear and vestibular endolymphatic hydrops

Severity of hydrops	Barath scale	Bernaerts scale
Cochlear endolymphatic hydrops (grade)
Normal	0 – Barely visible/Invisible cochlear duct in enhancing scala vestibuli
Mild	1 – Partial obstruction of scala vestibuli by dilated cochlear duct
Severe	2 – Total obliteration of scala vestibuli by enlarged cochlear duct
Vestibular endolymphatic hydrops
Normal	0 – The saccule and utricle are separated, and the saccule is smaller than the utricle.
Extra-low		1 – The saccule is equal or larger than the utricle but is not confluent with the utricle
Mild	1 – A confluence of saccule and utricle, a circular rim of perilymphatic space is visible	2 – A confluence of saccule and utricle, a circular rim of perilymphatic space is visible
Severe	2 – Total obliteration of the vestibular perilymphatic space by dilated endolymphatic structures	3 – Total obliteration of the vestibular perilymphatic space by dilated endolymphatic structures