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

Behrouz Agahi; Ashish Bhave; Knut Möller

doi:10.18416/AUTOMED.2026.2495

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

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)

This work is licensed under a Creative Commons Attribution 4.0 International License.

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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