Breast non-mass-like lesions on contrast-enhanced ultrasonography: Feature analysis, breast image reporting and data system classification assessment

Figure 4 Receiver-operating characteristic curves for ultrasonography, ultrasonography + contrast-enhanced ultrasound, and contrast-enhanced ultrasound + Breast Imaging Reporting and Data System. The area under the curve was 0.752 for ultrasonography, 0.877 for ultrasonography + contrast-enhanced ultrasound, and 0.903 for contrast-enhanced ultrasound + Breast Imaging Reporting and Data System. US: Ultrasonography; CEUS: Contrast-enhanced ultrasound; BI-RADS: Breast Imaging Reporting and Data System.