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FIG 3. MR imaging features of the parotid glands relative to conventional sialographic grades in xerostomia patients with or without Sjögren’s syndrome.
A–E, Axial T1-weighted MR images of the parotid glands in patients whose conventional sialographs were categorized as grade 0 (A), grade 1 (B), grade 2 (C), grade 3 (D), or grade 4 (E). Note that fat areas in the glands increase with the grades.
F–J, Axial fat-suppressed T2-weighted MR images of the parotid glands in patients (same patients as in A–E, respectively) whose conventional sialographs were categorized as grade 0 (F), grade 1 (G), grade 2 (H), grade 3 (I), or grade 4 (J). Note that intact lobule areas in the glands decrease with the grades.
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