Table 1.
List of the extracted features from each frame.
| Lumen features | Calcification features | Statistics | ||
|---|---|---|---|---|
| 2D features (Frame–based) |
3D features (Lesion–based) |
2D features (Frame–based) |
3D features (Lesion–based) |
|
| Area | Volume | Max arc angle | Volume | Mean |
| %Area of Stenosis | Equivalent diameter | Max thickness | Volume index | Median |
| Major axis length | Extent | Max depth | Length | SD |
| Minor axis length | Convex volume | Area | Equivalent diameter | Max |
| Perimeter | Solidity | Major axis length | Extent | Min |
| Extent | Surface area | Minor axis length | Convex volume | Skewness |
| Eccentricity | Extent | Solidity | Kurtoses | |
| Solidity | Eccentricity | Surface area | ||
| Circularity | Perimeter | Number of deposits | ||
| Area < 0.5*Ref | Solidity | Calcification % | ||
| Area < 0.7*Ref | Circularity | |||
| Area < 0.9*Ref | Stretch ration | |||
This is a comprehensive list; recall that if you have an area, for example, we multiply it with the six statistical assessments. When we put all of this together, we get 238 features.