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The untapped potential of 3D virtualization using high resolution scanner-based and photogrammetry technologies for
Anuar Giménez-El-Amrani1, Andres Sanz-Garcia2, Néstor Villalba-Rojas1
1BTELab. Fundación de Investigación del Hospital General Universitario de Valencia, Avda. Tres Cruces, 2, Pabellón B Planta 4, Valencia, 46014, Spain.
Computers in Biology and Medicine
|November 6, 2024
Summary
Structured light scanning (SLG) is optimal for virtual tissue banking, balancing accuracy and cost. Photogrammetry (PHG) excels in capturing cranial caps, despite lower dimensional accuracy, aiding tissue banking modernization.
Area of Science:
- Biomedical Engineering
- Medical Imaging
- Tissue Banking
Background:
- Bone transplantation requires accurate tissue measurements and reduced contamination risks.
- Current methods for tissue banking involve repeated freeze-thaw cycles, impacting tissue viability.
- Non-contact 3D scanning offers a potential solution for virtual tissue banks.
Purpose of the Study:
- Evaluate three non-contact 3D scanning technologies: structured light scanning (SLG), laser scanning (LAS), and photogrammetry (PHG).
- Assess the precision and suitability of these methods for tissue banking operations, particularly for bone allografts.
- Provide guidance for selecting optimal 3D scanning technologies for modernized tissue banking.
Main Methods:
- Comparison of SLG, LAS, and PHG using anatomical specimens under sterile conditions.
- Post-processing of scanned cranial caps, including surface merging and alignment.
- Colorimetric analysis using CIEDE2000 and neurosurgeon questionnaires to evaluate performance.
Main Results:
- Structured light scanning (SLG) demonstrated the best overall balance of accuracy, minimal distortion, cost-efficiency, and ease of use for tissue banking.
- All evaluated methods slightly underestimated specimen volume in virtual models.
- Low-cost photogrammetry (PHG) showed superior performance in capturing cranial caps, according to colorimetric analysis and surgeon feedback, despite lower dimensional accuracy.
Conclusions:
- SLG is recommended as the optimal technology for general tissue banking applications.
- PHG is a viable, cost-effective option for specific applications like cranial cap scanning.
- The study provides critical insights for selecting 3D scanning technologies to enhance tissue banking protocols and advance virtual tissue bank development.
