Article Figures & Data
Figures
- Fig 1.
Standard ROI placement. Co-registration of PET and MR imaging was attempted in all cases. The tumor maximal SUV was selected as the highest accumulation in the entire tumor. Also, the mean SUV of the contralateral normal frontal cortex was drawn in 3 circular ROIs with a diameter of 10 mm on each of the 3 axial planes. Left: MET PET. Right: FLAIR image.
- Fig 2.
Box plots comparing MET T/N ratio in grade II gliomas. Circles above bars represent outliers (1.5 × the interquartile range). Asterisks represent the mean value. There was a significant difference between the MET T/N ratios of DA and OD (P < .005).
- Fig 3.
Left upper: contrast-enhanced T1WI. Right upper: FLAIR image. Left lower: MET PET. Right lower: MET PET is superimposed on contrast-enhanced T1WI. A, A 31-year-old man presented with diffuse astrocytoma that had a lower MET uptake and proliferative activity (MET T/N ratio, 1.00; Mib-1 LI, 1.1%). B, A 37-year-old man presented with diffuse astrocytoma with a higher MET uptake and proliferative activity (MET T/N ratio, 3.25; Mib-1, LI, 5.6%). C, A 35-year-old man presented with oligodendroglioma with a higher MET uptake and lower proliferative activity (MET T/N ratio, 4.71; Mib-1 LI, 3.0%).
- Fig 4.
Graph showing the correlation between MET T/N ratio and Mib-1 LI. A significant correlation was shown in diffuse astrocytoma (A; r = 0.63; P < .005). A correlation could not be demonstrated in oligodendroglioma (B) and oligoastrocytoma (C).
Tables
Clinical data and histopathologic results*
Histologic Diagnosis Number of Patients (M/F) Age Location F P T I Diffuse astrocytoma 21 (14/7) 40.9 ± 15.2 8 3 4 6 Oligodendroglioma 12 (8/4) 38.0 ± 13.5 10 2 0 0 Oligoastrocytoma 16 (10/6) 39.3 ± 13.8 8 3 2 3 Total 49 (32/17) 39.6 ± 14.1 26 8 6 9 Note:—F indicates frontal; P, parietal; T, temporal; I, insular.
* Data are expressed as mean ± SD.
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