Figure 5. . Results for the best single-, two- and three-feature classification using naive-Bayes and K-nearest neighbor classifier models at week 4 of radiation treatment (receiver operating characteristic curve presented).

ACE: Attenuation coefficient estimate; ASD: Average scatterer diameter; AUC: Area under the curve; CON: Contrast; ENE: Energy; K-NN: K-nearest neighbor; MBF: Mid-band fit; SI: Spectral intercept.