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Fig. 1. —Bar graph shows positive and negative predictive values for three human observers as well as those for network ANN_MAX in predicting presence or absence of emboli in either lung. Performance of networks is comparable with that of human observers. ANN_MAX = highest likelihood of embolism in right or left lung produced by networks trained separately on the two lungs, black bars = positive predictive value, white bars = negative predictive value.

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