Proceedings on Automation in Medical Engineering
Vol. 3 No. 1 (2026): Proc AUTOMED
https://doi.org/10.18416/AUTOMED.2026.2495

18th Interdisciplinary AUTOMED Symposium in Collaboration with the TC Medical Robotics, 2495

A cubic model for vessel lumen reconstruction from segmental balloon strain data

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Behrouz Agahi (The Institute of Technical Medicine, Furtwangen University), Ashish Bhave (1) Institute of Technical Medicine, Furtwangen University; 2) Faculty of Engineering, Freiburg University), Knut Möller (1) Institute of Technical Medicine, Furtwangen University; 2) Faculty of Engineering, Freiburg University)

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Abstract

Balloon catheters with distributed strain sensors aim to estimate arterial wall mechanics in vivo. Reconstructing the lumen contour from circumferential segment lengths is essential. The standard linear one-parameter mapping proves insufficient for soft-tissue and concave geometries. A smooth cubic model with soft geometric penalties and robust evolutionary optimization achieves accurate closure and area agreement while yielding physiologically realistic curvature.

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