Alternative solution of virtual biomodeling based on CT-scans

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Computer-Aided Design

Background:

• Computed tomography (CT) scans are crucial for visualizing anatomical structures.
• Converting 2D CT data into 3D biomodels is essential for detailed analysis and virtual reconstruction.
• Existing methods may have limitations in accessibility or specific applications.

Purpose of the Study:

• To present an alternative, accessible method for generating 3D biomodels from CT scans.
• To demonstrate the utility of 2D and 3D Computer-Aided Design (CAD) software in biomodel creation.
• To provide a viable solution for cases requiring manipulation of fused or complex bone structures.

Main Methods:

• CT data of an equine spine were converted to TIF format.
• Bony structures were manually delineated using closed splines in 2D CAD software.
• IGS files were generated for import into 3D CAD software.
• 3D biomodels were created by positioning CT layers, creating surfaces, and solidifying the models.

Main Results:

• A functional workflow was established to convert 2D CT slices into 3D biomodels.
• The method successfully created virtual biomodels of individual bones from the equine spine.
• The process allowed for the virtual separation of unnaturally fused bones using artificial splines.

Conclusions:

• The presented method offers a practical alternative for 3D biomodel creation from CT scans, particularly when only CAD software is available.
• This approach is beneficial for reconstructing complex anatomical variations and anomalies.
• The use of 3D CAD software provides flexibility in manipulating and refining biomodels.