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Table 2 Sensitivity, specificity, PPV, NPV, and accuracy of the SBRs with and without the CSF-mask algorithm

From: Impact of the cerebrospinal fluid-mask algorithm on the diagnostic performance of 123I-Ioflupane SPECT: an investigation of parkinsonian syndromes

 

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

Accuracy (%)

Non-CSF-mask (NC)

86.5 (141/163)

77.8 (123/158)

80.1 (141/176)

84.8 (123/145)

82.2 (264/321)

CSF-mask (NC)

88.3 (144/163)

81.0 (128/158)

82.8 (144/174)

87.1 (128/147)

84.7 (272/321)

Non-CSF-mask (AC)

84.7 (138/163)

82.9 (131/158)

83.6 (138/165)

84.0 (131/156)

83.8 (269/321)

CSF-mask (AC)

84.0 (137/163)

91.8 (145/158)

91.3 (137/150)

84.8 (145/171)

87.9 (282/321)

  1. PPV positive predictive value, NPV negative predictive value, CSF cerebrospinal fluid, SBR specific binding ratio, NC no correction, AC attenuation correction