Table 3. Intraobserver Agreement for Sonographic BI-RADS Descriptors .

BI-RADS Descriptors	Observer 1 κ value	Observer 2 κ value
Shape	0.85	0.91
Orientation	0.84	0.94
Margin	0.71	0.83
Lesion boundary	0.71	0.94
Echo pattern	0.68	0.71
Posterior acoustic features	0.79	0.94