14635
Sensitivity , specificity , positive predictive value ( PPV ) , and negative predictive value ( NPV ) were : sensitivity = 0 . 95 , specificity = 0 . 64 , PPV = 0 . 82 and NPV = 0 . 88 for octreo - SPECT ; sensitivity = 0 . 88 , specificity = 0 . 36 , PPV = 0 . 62 and NPV = 0 . 50 for FDG - PET / CT .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None