Technician
Capture without touching the plan
While the doctor finishes another consultation, the technician scans the patient with the iPhone, leaves the orientation and chalk marks in place and the model lands in the record. They capture and prepare, but they don't mark zones or delete scans: the medical team decides that.
Doctor
Zones and measurements on the model
The doctor opens the scan, paints the recipient and donor zones with the brushes and taps two points to measure in millimeters. If the AI layer proposes zones, the doctor sees them, corrects them and keeps the version they approve.
Patient
Seeing their head in 3D
The doctor rotates the model in front of the patient: the recipient zone in blue, the donor zone in green. The patient understands why a specific treatment is being proposed before any figures are discussed.