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Conventional MR imaging features of ameloblastomas and keratocystic odontogenic tumors

MR Imaging FeaturesAmeloblastomasKeratocystic Odontogenic Tumors
n97
Maxilla/mandible1/80/7
Size (L × S × H, cm), mean (± SD)3.6 (1.2) × 2.3 (0.6) × 3.8 (0.9)2.8 (0.5) × 1.4 (0.7) × 3.3 (1.2)
Tumor with solid wall90
Signal intensity on T1/fsT2WISolid LesionNonenhancing LesionNonenhancing Lesion
    Low/high071
    Intermediate/high021
    Low/intermediate401
    Intermediate/intermediate504
  • Note:—T1/fsT2WI indicates T1/fat-suppressed T2-weighted images; L × S × H, average long axes (on axial T1WI) × short axes (on axial T1WI) × heights (on coronal T1WI). Solid and nonenhancing lesions indicate tumor areas with and without contrast enhancement, respectively. Bold figures indicate type A nonenhancing lesion with high-intensity signals on fsT2WI.