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Linear discriminant analysis. (a) Mean entropy versus color Doppler area has sensitivity equal to 0.74 and specificity equal to 0.81. (b) Mean entropy versus mean area with entropy < 4 has sensitivity equal to 0.63 and specificity equal to 0.80. Green dots are related to “normal” sites, red triangles to “active” sites, and black crosses highlight false positives and false negatives.
Note: Figure is available in full color in the online version at uix.sagepub.com
