Figure 1. The MRI, quantized tumor ROI, and texture feature images for a typical NR and R.

Includes (A) MRI sagittal view before treatment, (B) the MRI ROI quantized to 16 grey levels with both the ROI core and a margin of 10 pixels outlined, and feature images for (C) MAX, (D) HOM, (E) ENE, and (F) COR. The solid lines around the tumor core in the feature images differentiate the cores from the margins. Scale bars on the top panel correspond to 1 cm.