Combined cone-beam CT imaging and microsurgical dissection of cadaver specimens to study cerebral venous anatomy: a technical note

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Purpose: Cadaver dissections and X-ray based 3D angiography are considered gold standards for studying neurovascular anatomy. We sought to develop a model that utilize the combination of both these techniques to improve current tools for anatomical research, teaching and preoperative surgical planning, particularly addressing the venous system of the brain. Materials and methods: Seven ethanol-fixed human cadaveric heads and one arm were injected with a latex-barium mixture into the internal jugular veins and the brachial artery. After the ethanol-based fixation, specimens were scanned by high-resolution cone-beam CT and images were post-processed on a 3D-workstation. Subsequent, microsurgical dissections were performed by an experienced neurosurgeon and venous anatomy was compared with relevant 3D venograms. Results: Latex-barium mixtures resulted in a homogenous cast with filling of the cerebral venous structures down to 150 μm in diameter. The ethanol-based preparation of the cadaveric brains allowed for near-realistic microsurgical maneuverability during dissection. The model improves assessment of the venous system for anatomical education and hands-on surgical training. Conclusion: To our knowledge we describe the first preparation method which combines near-realistic microsurgical dissection of human heads with high-resolution 3D imaging of the cerebral venous system in the same specimens.

OriginalsprogEngelsk
TidsskriftSurgical and Radiologic Anatomy
Vol/bind45
Sider (fra-til)1177-1184
Antal sider8
ISSN0930-1038
DOI
StatusUdgivet - 2023

Bibliografisk note

Funding Information:
Open access funding provided by Royal Library, Copenhagen University Library. The costs for development of the cadaveric models was funded by the Dagmar Marshall foundation, the A.P. Møller foundation, and the research foundation of the Department of Neurosurgery, Rigshospitalet, Copenhagen, Denmark.

Publisher Copyright:
© 2023, The Author(s).

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