Table 2:

Grading criteria for imaging findings^a

Category	Grades
	1	2	3
Size symmetry	Markedly asymmetric	Mildly-to-moderately asymmetric	Symmetric
Degree of enhancement	Less than extraocular muscle	Similar to extraocular muscle	Greater than extraocular muscle
T2 signal intensity	Similar to extraocular muscle	Similar to gray matter	Similar to vitreous

^aGrading criteria for the symmetry of the size of the nasal turbinates, their overall degree of enhancement, and their signal intensity on the T2-weighted images. Scores range from 1 to 3, with scores of 1.5 or 2.5 representing the intermediate grade between 2 levels.