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FIGURE 4. (A) Box plots of 18F-FDOPA T/N values in high-grade and low-grade brain tumors and radiation necrosis. There was no statistically significant difference between high-grade and low-grade tumors (P = 0.40). There was a statistically significant difference between tumors and radiation necrosis (P < 0.00001). Error bars indicate SEs. (B) Box plots of 18F-FDOPA T/N values in brain tumors that were contrast enhancing on MRI (CE) and those that did not take up contrast material on MRI (NCE). No statistical difference was seen between CE and NCE tumors (P = 0.40). Statistically significant difference was seen between CE tumors and radiation necrosis (P < 0.00001). Error bars indicate SEs.
