Table 2 Receiver operating characteristic (ROC) analysis of the three texture features entropy, sum square (SumSQR) and sum variance (SumV) for discrimination of the two PD patient groups.

From: Texture-based markers from structural imaging correlate with motor handicap in Parkinson’s disease

 

Entropy

SumSQR

SumV

AUC

Sp

Se

AUC

Sp

Se

AUC

Sp

Se

Substantia nigra

0.76

0.72

0.73

0.66

0.65

0.70

0.71

0.74

0.73

Putamen

 < 0.5

  

 < 0.5

  

0.62

0.65

0.66

Caudate nucleus

0.63

0.66

0.65

0.55

0.58

0.56

0.64

0.65

0.65

Thalamus

0.54

0.56

0.57

0.69

0.70

0.70

0.79

0.78

0.78

Sub-thalamic nucleus

 < 0.5

  

 < 0.5

  

 < 0.5

  
  1. AUC area under the curve, Sp specificity, Se sensitivity.
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