Computer-Aided Assessment of Tumor Grade for Breast Cancer in Ultrasound Images
Table 1
Values of the features of low- and high-grade tumors.
Features
Low-grade
High-grade
value
Mean ± SD
Median
Mean ± SD
Median
Textural
0.025
0.026
0.201
3.227 ± 0.696
3.260 ± 0.686
0.815
0.482
0.485
0.927
3.936 ± 0.206
3.911 ± 0.149
0.542
1.360 ± 0.170
1.372 ± 0.147
0.715
0.623 ± 0.088
0.590 ± 0.078
0.069
0.031
0.033
0.218
1.874 ± 0.433
1.864 ± 0.354
0.914
0.583 ± 0.043
0.580 ± 0.032
0.747
3.727 ± 0.203
3.706 ± 0.151
0.608
1.002 ± 0.138
1.005 ± 0.108
0.900
0.783 ± 0.057
0.770 ± 0.041
0.233
0.026
0.027
0.214
2.925 ± 0.631
2.959 ± 0.549
0.795
0.507 ± 0.044
0.501 ± 0.026
0.504
3.905 ± 0.206
3.887 ± 0.146
0.647
1.291 ± 0.163
1.305 ± 0.119
0.658
0.661 ± 0.082
0.631 ± 0.060
0.072
0.040
0.043
0.496
1.104 ± 0.271
1.134 ± 0.220
0.583
0.669 ± 0.039
0.661 ± 0.029
0.331
3.493 ± 0.198
3.489 ± 0.144
0.916
0.736 ± 0.109
0.754 ± 0.084
0.413
0.873 ± 0.034
0.860 ± 0.030
0.061
Morphological
0.824
0.783
9.259 ± 2.919
9.691 ± 3.774
0.502
1.533
1.896
0.599
0.377 ± 0.101
0.373 ± 0.111
0.868
0.998 ± 0.002
0.998 ± 0.003
0.111
Ellipsoid fitting
1.622
1.757
0.521
1.238 ± 0.089
1.225 ± 0.114
0.503
0.910 ± 0.015
0.913 ± 0.018
0.427
15
18
0.082
7
10
0.055
23
30
0.047
4
4
0.642
1
1
0.842
5
5
0.595
Posterior acoustic
33.459 ± 6.517
34.870 ± 7.021
0.305
1.438 ± 0.318
1.570 ± 0.408
0.061
9.841 ± 6.939
12.173 ± 8.391
0.122
32.666 ± 26.935
42.986 ± 34.495
0.083
1.802 ± 0.780
2.035 ± 0.851
0.158
The mean value, standard deviation (SD), median value, and value of -test or Mann-Whitney test of each feature. Student’s -test was applied if a feature is normally distributed; otherwise, Mann-Whitney test was applied. The Kolmogorov-Smirnov test was applied to normality test.
