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Figure 1: Kaplan-Meier survival curves for time to progression within groups with low (<1.75) and high (>1.75) relative CBV. Low-grade gliomas with low relative CBV had a median time to progression of 4620 days ± 433 (solid curve that is far right shifted). Low-grade gliomas with high relative CBV had a median time to progression of 245 days ± 62 (dotted curve that is far left shifted) (P < .005). Data suggest that baseline relative CBV may be a stronger predictor of patient outcome than the initial histopathologic diagnosis, because if these were all true low-grade gliomas, the median time to progression would have been much longer than 245 days (8 months).
