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An Experimental Human DIEP Flap Model to Investigate Preservation Strategies for Vascularized Composite Allografts and Free Flaps
Published on: December 5, 2025
A pilot study on three-dimensional visualization of perforator flaps by using angiography in cadavers
Maolin Tang1, Zhixun Yin, Steven F Morris
1Wenzhou, Zhejiang, China; Guangzhou, Guangdong, China; and Halifax, Nova Scotia, Canada From the Department of Anatomy, Wenzhou Medical College, the Department of Orthopedic Surgery, Zhujiang Hospital, Southern Medical University, and the Department of Anatomy and Neurobiology and the Department of Surgery, Dalhousie University.
This study evaluates a new method for creating detailed 3D images of blood vessels in human cadavers. By combining specialized dye injections with advanced computer software, researchers can visualize how arteries travel through skin, fat, and muscle. This approach helps surgeons better plan complex tissue transfers by providing a clear, layered view of the body's internal structure.
Area of Science:
- Reconstructive surgery outcomes research within perforator flaps medicine
- Diagnostic imaging and anatomical sciences
Background:
No prior work has fully resolved the limitations of traditional vascular imaging for complex surgical planning. While lead oxide techniques offer high contrast, they fail to map the precise trajectory of source vessels. This gap motivated the search for more comprehensive anatomical visualization tools. It was already known that microvascular networks are difficult to track in two dimensions. That uncertainty drove the adoption of advanced digital reconstruction software in clinical research. Prior research has shown that accurate mapping of perforating vessels improves surgical outcomes. However, existing methods often lack the depth required for intricate tissue design. This study addresses the need for better spatial awareness in reconstructive procedures.
Purpose Of The Study:
The aim of this study is to evaluate a new method for the three-dimensional visualization of vascular structures in cadavers. Researchers sought to overcome the limitations of traditional imaging techniques that fail to map vessel trajectories accurately. The team addressed the difficulty of identifying the precise course and direction of source arteries for surgical planning. This project explores whether digital reconstruction software can enhance the understanding of microvascular anatomy. The motivation stems from the need for better spatial information when designing complex tissue transfers. By integrating advanced imaging with specialized software, the authors investigate a more efficient way to display internal structures. The study focuses on providing a layer-by-layer view of the body to assist in clinical education and preparation. This work establishes a framework for using modern digital tools to improve the accuracy of anatomical mapping.
Main Methods:
The team employed a pilot design to evaluate the utility of digital reconstruction in anatomical mapping. Two fresh cadavers underwent a specialized lead oxide-gelatin injection to highlight the vascular network. A spiral computed tomography scanner captured the internal structures following the dye procedure. Investigators transferred the resulting data into the Digital Imaging and Communications in Medicine format for processing. The review approach involved importing these files into a personal computer for analysis. Researchers utilized Materialise's Interactive Medical Image Control System to perform the three-dimensional rendering. This software allowed for the manipulation of the digital models to isolate specific anatomical layers. The study focused on creating transparent, layer-by-layer visualizations of the integument and underlying tissues.
Main Results:
The researchers successfully obtained three-dimensional visualizations of various bodily regions using the proposed digital workflow. This technique clearly displayed bone, soft tissue, skin, and vascular structures in a transparent, layer-by-layer format. Detailed views provided extensive information regarding the trajectory of vessels across all tissue planes. The intricate vascular details captured by the software demonstrated the anatomy of the integument and bone with high precision. This method proved to be a quick and easy way to represent cadaveric vascular networks. The findings highlight the ability of the software to isolate specific structures for better anatomical understanding. The study confirms that the integration of computed tomography and specialized software yields high-quality spatial data. These results suggest that the technique is a powerful alternative to traditional imaging for anatomical study.
Conclusions:
The authors propose that this digital reconstruction method offers a robust way to map vascular pathways. This technique allows for a clear, layered view of bone, soft tissue, and skin. The researchers suggest that the software provides extensive data on how vessels navigate through different tissue planes. Synthesis and implications indicate that this approach is both rapid and user-friendly for anatomical study. The team claims that the detailed images may assist in the design of surgical flaps. Findings suggest that the process effectively demonstrates the complex anatomy of the integument. The authors conclude that this method is a powerful tool for visualizing cadaveric blood supply. Future applications may benefit from the high level of detail provided by this layered visualization.
Frequently Asked Questions
The researchers propose that combining lead oxide-gelatin injections with spiral computed tomography allows for transparent, layer-by-layer visualization of vascular structures. This approach enables the mapping of vessel courses through skin, fat, and bone, which is not possible with standard imaging alone.
The study utilizes Materialise's Interactive Medical Image Control System, a software platform that converts Digital Imaging and Communications in Medicine data into three-dimensional models. This tool is necessary for processing the high-resolution scans into interactive, layered anatomical representations.
A spiral computed tomography scanner is required to capture the high-resolution data necessary for the software to render the microvascular network. This specific hardware ensures that the fine details of the injected vessels are preserved during the transition to digital formats.
The Digital Imaging and Communications in Medicine format serves as the standard bridge between the raw scanner output and the reconstruction software. This data type ensures compatibility, allowing the computer to interpret the spatial information required for accurate three-dimensional modeling.
The researchers measure the effectiveness of the technique by its ability to provide clear, transparent views of the integument, bone, and soft tissue. This phenomenon allows for the precise identification of vessel trajectories that are otherwise obscured in traditional two-dimensional imaging.
The authors suggest that this method is a quick and easy way to demonstrate vascular anatomy. They propose that these detailed views may be useful for surgeons when planning the design of complex tissue transfers.

