Magnetic resonance imaging: a useful tool to distinguish between keratocystic odontogenic tumours and odontogenic cysts

Differential diagnosis between a granuloma and radicular cyst: effectiveness of magnetic resonance imaging

“…, Probst et al . ). Specific features of odontogenic cysts have been recognized by radiologists: a low‐to‐intermediate SI on T1‐weighted images and high SI on T2‐weighted images, reflecting the fluid content of the inner portion of the lesion (Konouchi et al .…”

“…, Probst et al . ). The usefulness of MRI with contrast agent has been demonstrated on T1‐weighted images, in which a marked enhancement of the margin and a minor enhancement of the cavity have been observed (Yanagi et al .…”

“…, Probst et al . ) (Figs ). Differential diagnosis between cysts and granulomas requires meeting four of six criteria; this threshold of positive findings for diagnosis was adopted from the study of Guo et al .…”

“…According to Probst et al . , odontogenic cysts are more likely to be homogeneous on unenhanced T1‐weighted images with a higher SI compared with keratocysts. SI on contrast‐enhanced T1‐weighted images is useful for distinguishing unilocular cystic type ameloblastomas from odontogenic cysts (Hisatomi et al .…”

“…, Probst et al . ). MRI can distinguish the amount of solid versus liquid material present in a lesion and can determine the presence of an epithelial lining; furthermore, vascular density can be detected on contrast‐enhanced examinations (Minami et al .…”