3D scanning in hair clinics
Until recently, hair diagnosis depended on calibrated rulers, magnifying glasses, and clinician experience. Today, 3D scalp scanning via LiDAR or multi-image photogrammetry generates a precise three-dimensional model of the patient in minutes.
What is 3D hair scanning?
3D hair scanning generates a digital model of the scalp with:
- Exact geometry: curves, prominences, irregularities of baldness
- Density data: follicles per cm2 in each zone
- Objective measurements: total area, recipient area, available donor zone
- Temporal comparison: difference between scans over time
3D reconstruction of the scalp
3D capture technologies
LiDAR (iPhone Pro / iPad Pro)
- Precision: ±1 mm in area of interest
- Advantage: no additional hardware required
- Ideal for: consultations, frequent follow-ups
- Software: TrichoSuite uses the native iOS LiDAR sensor
Multi-image photogrammetry
- Process: 20-40 photos of the scalp from different angles
- Precision: ±0.5 mm
- Advantage: works with any camera
- Ideal for: high-quality clinical documentation
Dedicated hardware (Artec 3D, Creaform)
- Precision: ±0.05 mm
- Advantage: higher texture resolution
- Disadvantage: cost EUR 40,000-100,000
- Ideal for: high-volume clinics
Clinical applications of 3D
1. Precise graft calculation
Before 3D, graft calculation was an estimate based on rulers and visual experience. With 3D scanning:
- Recipient area measured in cm2 with precision
- Target density calculated per zone (30-60 FU/cm2)
- Exact number of needed grafts estimated
- Donor zone verified to supply them
2. Donor zone mapping
The donor zone doesn't have the same density everywhere. 3D scanning identifies:
- Higher density zones (priority extraction)
- Lower density zones (protect)
- Estimation of lifetime available graft bank
3. 3D distribution planning
The surgeon can visualize the proposed graft distribution in 3D before surgery:
- See frontal hairline design on the patient's actual model
- Simulate different densities per zone
- Adjust the plan until desired natural result is achieved
4. Objective post-operative follow-up
3D scans at follow-up milestones (1m, 3m, 6m, 12m) allow:
- Comparing actual coverage vs original planning
- Measuring density gained per zone in follicles/cm2
- Detecting growth problems early
- Generating objective reports for the patient
Longitudinal tracking with volumetric scanning
Impact on patient conversion
Showing patients a realistic 3D simulation of their expected result before signing the budget has a direct impact on conversion rates:
| Clinic without 3D | Clinic with 3D |
|---|---|
| Consultation → surgery conversion: 28% | Consultation → surgery conversion: 44% |
| Decision time: 3-4 weeks | Decision time: 1-2 weeks |
| Post-surgery NPS: 7.2/10 | Post-surgery NPS: 9.1/10 |
TrichoSuite internal data, sample of 47 clinics, 2025
Integration with TrichoSuite
TrichoSuite integrates the complete 3D scanning pipeline:
- Capture with iPhone LiDAR or upload existing model
- Automatic processing (Apple Object Capture / COLMAP / Meshroom)
- Interactive 3D visualization in the browser
- Graft calculator integrated with the model
- Temporal comparison between scans
- Export of clinical reports in PDF
Conclusion
3D scanning has gone from a niche technology to an accessible clinical tool. Clinics that adopt it not only plan better: they close more surgeries, have more satisfied patients, and differentiate from the competition.