One way is to segment OUT the chest wall, after that breast segmentation is a simple EdgeWave operation.
To segment the chest wall:
1. On every 5th slice, draw the chestwall boundary as an ROI (see pic below). In this prototype I recommend the boundary starting and ending at the margins of the image (later on we can eliminate this).
2. I will provide a specialized operation "MainMenu>Applications>Breast>Segment Chest wall from Contours". Internally this operation would perform completing the contour, and then "Fill & Morph convex" to fill the skipped slices.
3. Result of this operation would be a "CHEST ROI" that could be excluded from the image. Then we would simply apply the EdgeWave to segment out the Air.
4. Manual processing time should be <1 min. Computing time is <20 sec.
