3D Anatomical Reconstruction of the Healthy Human Laryngotracheal Complex. 1:1 Scale STL Dataset for Surgical Airway Simulation
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2025-12-18
2026-03-26
2026-03-26
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2026-04-07
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Chang, Karen
chanx344@umn.edu
chanx344@umn.edu
Abstract
This dataset contains a high-fidelity, three-dimensional digital reconstruction of the human laryngeal and tracheal structures, developed as a foundational "healthy baseline" for medical simulation and generative AI training. The model was generated via a "digital-to-physical" pipeline that synthesizes 2D medical illustrations into volumetric 3D meshes for surgical rehearsal. The reconstruction features a comprehensive anatomical breakdown including the superior laryngeal framework, defined by the shield-like thyroid cartilage and the foundational cricoid cartilage. Central to the model is a detailed thyroid gland—exhibiting distinct right and left lobes connected by the isthmus—positioned anterior to the tracheal rings. To enhance its utility for surgical simulation, the model incorporates color-coded vascular and neural pathways. Arterial/Venous Systems: High-resolution mapping of the common carotid arteries, internal jugular veins, and the superior/inferior thyroid vessels. Neural Critical Zones: Precise traces of the vagus nerves and recurrent laryngeal nerves (RLN), represented as high-risk zones for vocal cord dysfunction during trauma or surgical intervention. This asset serves as the anatomical ground truth for research involving AI-driven trauma synthesis. It provides the baseline structural data necessary to simulate complex biomechanical injuries, such as laryngeal fractures, by integrating force dynamics into a verified "healthy" digital mesh. This resource is intended for use in the development of high-fidelity surgical simulators, preoperative planning, and the study of laryngeal trauma morphology.
IRB Study ID#27908. Determination: Not human research.
Description
README: File Identification and Format.
2D Reference Image: AIMedSimulation_2DLarynx_GenAI.jpg
3D Asset Names: AIMedSimulation_Healthy_3DLarynx.stl; AIMedSimulation_3DNeck.stl
File Format: STL (Standard Tessellation Language). This format represents the surface geometry of the laryngeal and thyroid anatomy as a raw, unstructured triangulated surface. It is the industry standard for additive manufacturing, ensuring compatibility across all major 3D printing platforms and CAD software.
Slicing and Computational Parameters:
The model was processed using PrusaSlicer version 2.9.4 (based on the Slic3r engine). This software was utilized to optimize the anatomical mesh for high-fidelity physical output, ensuring that the complex biomechanical geometries—specifically the narrow diameters of the recurrent laryngeal nerves—are preserved during the "digital-to-physical" transition.
Structural Design and Assembly:
The current iteration of the AIMedSimulation_Healthy_3DLarynx.stl is provided as a single merged manifold to ensure structural integrity during the printing process. However, the design is modular and can be programmatically split into three distinct objects within a slicer or CAD environment.
Stabilization Substrate (Square Board): A specialized integrated "mounting board." Because the neural pathways (vagus and recurrent laryngeal nerves) are modeled at a frail, life-like scale, they are anchored to this board to reduce breakage during support removal and post-processing.
Airway Manifold (Cylinder): A negative-space cylinder that has been boolean-subtracted or integrated through the larynx and trachea. This creates a hollow, continuous airway passage essential for clinical airway simulation, allowing for the insertion of endoscopic cameras or intubation equipment.
Clinical Simulation Utility:
By integrating the stabilization board and the hollow airway cylinder, the file is optimized for the rapid development of surgical simulators. The design allows for tactile rehearsal of thyroidectomies or trauma repairs while maintaining the precise spatial orientation of "critical zones" (nerves and vessels) relative to the primary airway.
Referenced by
Image Credit: Illustrated by Chris Baron (Baron Illustrations). Clinical Source: Gary Clayman, DMD, MD, FACS, Clayman Thyroid Center / Hospital for Endocrine Surgery. All rights reserved. Used with permission.
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Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
http://creativecommons.org/licenses/by/4.0/
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David Hamlar MD, DDS Assistant Professor Craniofacial/Skull Base Surgery Department of Otolaryngology University of Minnesota Medical School
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Chang, Karen. (2026). 3D Anatomical Reconstruction of the Healthy Human Laryngotracheal Complex. 1:1 Scale STL Dataset for Surgical Airway Simulation. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/279999.
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AIMedSimulation_2DLarynx_GenAI.jpg
2D digital image of the laryngotracheal complex generated by Chat GPT
(72.44 KB)
AIMedSimulation_Healthy_3DLarynx.stl
3D digital image of the laryngotracheal complex without the neck
(36.74 MB)
AIMedSimulation_3DNeck.stl
3D digital image of the laryngotracheal complex with the neck
(31.47 MB)
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