Documentation Index
Fetch the complete documentation index at: https://docs.spine.altician.com/llms.txt
Use this file to discover all available pages before exploring further.
What Is Skin Detection?
Skin Detection automatically identifies where an arrow path intersects the surface of the body. This helps you quickly locate the skin entry point for a given approach without placing markers manually.How It Works
When an arrow is placed on the volume, the app traces the arrow’s path and finds the point where it first meets the outer surface. This detected location is shown as an amber indicator directly on the arrow in the 3D view.
Accepting or Dismissing a Detection
Each detected point appears with two options in the right panel:| Action | Result |
|---|---|
| Accept | Converts the detected point into an S-point (skin entry marker) |
| Dismiss | Removes the indicator without creating an S-point |
S-Points (Skin Entry Markers)
Accepted detections become S-points — named markers representing skin entry positions. S-points are listed in the right panel and can be:- Renamed for easy identification
- Toggled visible/hidden individually
- Used as the starting reference for S-M Distance measurements
CT Scan Compatibility
Skin Detection works with both MRI and CT scans. CT volumes often produce more precise surface detection due to the higher contrast between skin and surrounding air.Skin Detection requires at least one arrow to be placed. If no arrow is present, the detection option will not be available.