Figure 4From: The usefulness of bone SPECT/CT imaging with volume of interest analysis in early axial spondyloarthritisReceiver operating characteristic (ROC) curve analysis of bone SPECT/CT and bone scintigraphy. The area under the curve (AUC) of bone SPECT/CT was 0.862 (p < 0.001) and that of bone scintigraphy was 0.523 (p = 0.832). Bone SPECT/CT showed a sensitivity of 80.0% and specificity of 84.6% with a cut-off SIS ratio of 1.50.Back to article page