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Table 2:

Grading criteria for imaging findingsa

CategoryGrades
123
Size symmetryMarkedly asymmetricMildly-to-moderately asymmetricSymmetric
Degree of enhancementLess than extraocular muscleSimilar to extraocular muscleGreater than extraocular muscle
T2 signal intensitySimilar to extraocular muscleSimilar to gray matterSimilar to vitreous
  • a Grading 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.