Table 2 Summary of computerized features in distinguishing between malignant and benign on dynamic contrast-enhanced magnetic resonance imaging.
Feature | Description |
|---|---|
Irregularity | Deviation of the lesion surface from the surface of a sphere |
Surface to volume ratio (1/mm) | Ration of surface area to volume |
Margin sharpness | Mean of the image gradient at the lesion margin |
Energy | Measure of image homogeneity |
Information measure of correlation | Measure of nonlinear gray-level dependence |
Sum Average | Measure of the overall image brightness |
Maximum enhancement | Maximum contrast enhancement |
Time to peak | Time at which the maximum enhancement occurs |
Washout rate (1/s) | Washout speed of the contrast enhancement |
Volume of most enhancing voxels (mm3) | Volume of the most enhancing voxels |