Fig. 2
From: Diagnostic accuracy of 18F–FDG PET/CT and MR imaging in patients with adenoid cystic carcinoma
No tumour recurrence: PET/CT imaging was true-negative, indistinctive finding on MRI. Patient after multiple resections of recurrent tumours of a left buccal adenoid cystic carcinoma. A hyperintense lesion is seen on the contrast-enhanced T1-weighted MR image (c) (arrow), but there was no pathological finding on the fused PET/CT (a) and PET image (b). The follow-up confirmed no recurrence