Table 3. Characterization and agreement analysis of BI-RADS® classification of breast lesions and ultrasound descriptors of lesions submitted to biopsy, between researchers, in each method.
| ABUS | Kappa | HHUS | Kappa | ||||
|---|---|---|---|---|---|---|---|
| P1 | P2 | P1 | P2 | ||||
| BI-RADS® | |||||||
| Benign | 9(33,3) | 13(48,1) | 0,63* | 9(33,3) | 11(40,7) | 0,68* | |
| Suspect | 18(66,7) | 14(51,9) | 18(66,7) | 16(59,3) | |||
| Echogenicity | |||||||
| Hypoechoic | 10(41,7) | 10(41,7) | 0,85** | 9(37,5) | 11(45,8) | 0,85** | |
| Isoechoic | 0(0,0) | 1(4,2) | 0(0,0) | 0(0,0) | |||
| Heterogeneous | 8(33,3) | 8(33,3) | 9(37,5) | 8(33,3) | |||
| > 1 pattern | 3(12,5) | 1(4,2) | 3(12,5) | 1(4,2) | |||
| Solid-cystic | 3(12,5) | 4(16,7) | 3(12,5) | 4(16,7) | |||
| Form | |||||||
| Oval | 14(58,3) | 14(58,3) | 0,91** | 13(54,2) | 13(54,2) | 1,00** | |
| Round | 0(0,0) | 1(4,2) | 0(0,0) | 0(0,0) | |||
| Irregular | 10(41,7) | 9(37,5) | 11(45,8) | 11(45,8) | |||
| Orientation | |||||||
| Parallel | 23(95,8) | 24(100,0) | 0,83* | 22(91,7) | 22(91,7) | 1,00* | |
| Not parallel | 1(4,2) | 0(0,0) | 2(8,3) | 2(8,3) | |||
| Margins | |||||||
| Circumscribed | 16(66,7) | 15(62,5) | 0,87** | 16(66,7) | 15(62,5) | 0,98** | |
| Indistinct | 4(16,7) | 5(20,8) | 4(16,7) | 4(16,7) | |||
| Angled | 0(0,0) | 0(0,0) | 1(4,2) | 2(8,3) | |||
| Microlobulated | 1(4,2) | 2(8,3) | 1(4,2) | 1(4,2) | |||
| Spiked | 3(12,5) | 2(8,3) | 2(8,3) | 2(8,3) | |||
| Rear acoustics | |||||||
| Absent | 19(79,2) | 19(79,2) | 1,00** | 18(75,0) | 18(75,0) | 1,00** | |
| Acoustic reinforcement | 0(0,0) | 0(0,0) | 1(4,2) | 1(4,2) | |||
| Shadow | 5(20,8) | 5(20,8) | 5(20,8) | 5(20,8) | |||
*
Kappa;
**
Kendall's Tau-b;
n - absolute frequency; % - relative Frequency; ABUS - automated breast ultrasound; HHUS - hand held ultrasound; P1 - researcher 1; P2 - researcher 2