Table 2 Detailed radiomics features extracted from each ultrasound feature map and its 4 frequency components
Kinds of high-throughput radiomics features | Texture features from each ultrasound feature map | Wavelet-based texture features from frequency component 1 | Wavelet-based texture features from frequency component 2 | Wavelet-based texture features from frequency component 3 | Wavelet-based texture features from frequency component 4 |
|---|---|---|---|---|---|
Histogram | 16 | 16 | 16 | 16 | 16 |
GLCM | 13 | 13 | 13 | 13 | 13 |
GLRLM | 22 | 22 | 22 | 22 | 22 |
GLSZM | 13 | 13 | 13 | 13 | 13 |
NGTDM | 5 | 5 | 5 | 5 | 5 |
Total | 69 | 276 | |||