Application of 3D-Modeling in Medicine  in Preparation for 3D-Printing

Abstract

3D-modeling in the medical field can be used to create medical models (eg, tissues and human organs) using 3D-printing or used for digital 3D visualization of the necessary structures. Medical 3D-printing is used when the work on prostheses that should perfectly match the patient's anatomy is needed. In addition, thanks to 3D-modeling technology, it is possible to develop peculiar medical tools. It is also possible to perform trial surgeries on 3D-models before the actual operation. There is special software for creating medical 3D-models for further printing.  The purpose of this work is to determine the functions of 3D-modeling in preparation for 3D-printing in the process of creating medical models and comparative analysis of software for 3D-modeling used in the medical field. There is a common workflow that can be used to convert volumetric medical imaging data (created by computer tomography (CT), or other imaging techniques) into physical models printed on a 3D-printer. This process is divided into three stages: image segmentation, polygon mesh refinement, and 3D-printing. 3D-modeling programs are used at the stage of polygon mesh refinement. They allow almost unlimited manipulations to  refine the mesh to make the model printable. The main manipulations for post-processing of a segmented model using 3D modeling are: 1) reparation - correction of errors and discrepancies that sometimes occur in the process of segmentation and images export; 2) smoothing - correction of errors that occur during segmentation due to inappropriate resolution of the original medical image via softening by smoothing the surface of the model; 3) adding elements - combining a segmented model with other structures or removing unnecessary parts from the segmentation. As a result of a comparative analysis of 3D-modeling software used in the medical field, it was found that for 3D-modeling can be used software specifically designed for medical 3D-modeling and regular 3D-modeling software. When using regular software, you need third-party software to get the correct model file format. The choice of software depends on the goal: to work with implants and create patient-specific devices, it is possible to use specially designed programs for these purposes, such as Within Medical and Medical Design Studio; if high accuracy is  required, it is possible to use D2P created for working with DICOM-images at the image segmentation stage; to achieve fast results, when maintaining of maximum accuracy is not needed, a mobile version of the software, such as Ossa 3D, can be used; common 3D-modeling software, such as Cinema 4D and Blender, can be used to develop peculiar tools and medical equipment. 

Keywords

References

1. S. S. Beknazarova, M. A. Maxammadjonov, and S. N. Ibodullayev, “3D-modeling and the role of 3D-modeling in our life,” World Sci., vol. 3, no. 7, pp. 28–31, 2016, URL: https://rsglobal.pl/index.php/ws/article/view/1054.
2. L. Gaget, “Top 8 of the best 3D modeling software for the medical industry (2021 Update),” Nov8, 2017. [Online]. Available: https://www.sculpteo.com/blog/2017/11/08/top-8-of-the-best-3d-modeling-software-for-the-medical-industry.
3. T. M. Bücking, E. R. Hill, J. L. Robertson, E. Maneas, A. A. Plumb, and D. I. Nikitichev, “From medical imaging data to 3D printed anatomical models,” PLoS One, vol. 12, no. 5, p. e0178540, May 2017, DOI: https://doi.org/10.1371/journal.pone.0178540.
4. “3D-DOCTOR Software has been one of the tremendous analysis software that I use on a regular bases to extract information from image files to create 3D model.” [Online]. Available: http://www.ablesw.com/3d-doctor/.
5. “Medical 3D printing and orthopedic implant design software.” [Online]. Available: https://www.autodesk.com/products/within-medical/overview.
6. “Medical Design Studio.” [Online]. Available: https://www.anatomage.com/medical-design-studio/.
7. “Ossa 3D.” [Online]. Available: http://www.conceptualiz.com/products_ossa.html.
8. “D2P. DICOM 3D Modeling Software.” [Online]. Available: https://www.3dsystems.com/dicom-to-print.
9. “CINEMA 4D 3D computer animation, modeling, simulation, and rendering software.” [Online]. Available: https://www.maxon.net/en/cinema-4d.
10. “Blender.” [Online]. Available: https://www.blender.org/.

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Copyright (c) 2026 Наталія Юріївна Оникієнко (Автор)