Figure 4

Spectral Phasor histograms using 810 nm (a–c) and 890 nm (d–f) for: Control (a,d), Grade I meningioma (b,e) and Grade II meningioma (c,f).

Spectral Phasor histograms using 810 nm (a–c) and 890 nm (d–f) for: Control (a,d), Grade I meningioma (b,e) and Grade II meningioma (c,f).