Fig. 5

Fagan plot to evaluate the clinical utility of shear wave elastography for differentiation of liver lesions. (A) Pre-test probability = 25%; (B) Pre-test probability = 50%; (C) Pre-test probability = 75%. When the pre-test probability was 25%, with 60% probability of malignant disease following a positive measurement, and the probability reduced to 7% when a negative measurement occurred (Fig. a). When the pre-test probability was 50%, with 82% probability of malignant disease following a positive measurement, and the probability reduced to 18% when a negative measurement occurred (Fig. b). When the pre-test probability was 75%, with 93% probability of malignant disease following a positive measurement, and the probability reduced to 39% when a negative measurement occurred (c). (PLR: positive likelihood ratio; NLR: negative likelihood ratio)