Article Figures & Data
Figures
- Fig 1.
MTS in a 31-year-old woman. A, FDG-PET image was read as having normal findings. B, However, the FLAIR image shows some question of increased T2 signal intensity in the right hippocampus. C, FDG-PET/MR imaging coregistration demonstrates subtle hypometabolism of the right mesial temporal structures. Because neurocoginitive testing also demonstrated impaired function of right mesial temporal structures, right anteromedial temporal lobectomy and hippocampectomy were performed. FDG-PET/MR imaging coregistration facilitated localization of the metabolically abnormal area that was subtle when read by FDG-PET alone.
- Fig 2.
FCD type II in a 5-year-old girl. A, T2-weighted MR image demonstrates hyperintensity in the left frontal white matter suggestive of FCD. B, With FDG-PET/MR imaging coregistration, a focal area of hypometabolism is seen correlating to the lesion. Pathologic findings of the surgical resection specimen were consistent with FCD type II.
- Fig 3.
FCD type I in a 3-year-old boy. A, T2-weighted MR image shows questionable hyperintensity and atrophy in the left temporal pole. B, FDG-PET/MR imaging coregistration shows that this area corresponds to an area of mild hypometabolism. After a left lateral temporal lobe resection, pathologic findings were consistent with FCD type I.
- Fig 4.
Tumor with surrounding FCD in a 7-year-old girl. A, T2-weighted MR image shows a lesion in the right mesiotemporal lobe with perilesional blurring of the gray and white matter in the right anterior temporal pole. B, FDG-PET/MR imaging coregistration demonstrates relative hypometabolism in right temporal lobe localized at the lesion and the surrounding abnormal gray and white matter. After a right anterior temporal lobectomy, pathologic findings of the surgical specimen showed a neoplasm with features of oligoastrocytoma with surrounding FCD type I.
- Fig 5.
Tumor with surrounding FCD in an 18-year-old woman. A, FLAIR sequence shows hyperintensity of the left amygdala and temporal lobe. B, FDG-PET/MR imaging coregistration demonstrates an area of hypometabolism extending beyond the lesion seen with MR imaging. After surgical resection, ganglioglioma was seen on pathology of the lesion (white arrow). Pathology of the area of hypometabolism surrounding the lesion (yellow arrow) showed histology consistent with FCD type I.
- Fig 6.
TSC in a 5-year-old girl. A, T2 axial image shows numerous hyperintense tubers on both temporal lobes. B, FDG-PET/MR imaging coregistration demonstrates an area of hypometabolism in the right temporal pole that is significantly larger than the tuber size. EEG demonstrated the presence of right temporal interictal discharges suggesting an epileptogenic zone in this area. Right temporal lobectomy was performed with good postsurgical seizure control.
