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NIR signal is correlated with gadolinium enhancement by MRI. A, T1-to-normal ratio vs SBR for all pituitary adenomas and craniopharyngiomas combined with 95% confidence interval. B, T1-to-normal ratio vs SBR for pituitary adenomas. C, T1-to-normal ratio vs SBR for cranoipharyngiomas. D, T1-to-normal ratio for chordomas.
