Automatic Detection of Bronchoscopes on X-ray Images

Parvin M, Rohleder M, Maier A, Kunze H (2025)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2025

Journal

Informatik aktuell Gesellschaft für Informatik (GI)

Publisher: Springer

Series: Informatik aktuell

City/Town: Cham

Pages Range: 248-253

Conference Proceedings Title: Bildverarbeitung für die Medizin 2025. Proceedings, German Conference on Medical Image Computing, Regensburg March 09-11, 2025

Event location: Regensburg DE

ISBN: 9783658474218

DOI: 10.1007/978-3-658-47422-5_54

Abstract

Bronchoscopy is a crucial step in lung cancer diagnosis after observing a nodule in a lung computed tomography (CT) scan. However, it is often a difficult procedure, particularly for less experienced clinicians. We propose a pipeline for the automatic detection of bronchoscopes in x-ray images to support clinicians in lung airway navigation. Segmentation of bronchoscopes, like other tubular structures, is inherently difficult due to their narrowshape and poor image contrast. Our approach employs two preprocessing strategies, contrast limited adaptive histogram equalization (CLAHE) and negative log (NegLog) transform, along with two loss functions: mean squared Error (MSE) and weighted MSE (WMSE), with MSE serving as the baseline. We evaluate on two different datasets, and the model using WMSE as loss function along with CLAHE as preprocessing can predict 99% of the test images with 0.68 mean Dice similarity coefficient (DSC), 0.63 centerline Dice and 3 mm pixel distance. Additionally, we apply random sample consensus (RANSAC) and skeletonization algorithms for postprocessing and polyline retrieval and our findings indicate that skeletonization offers a more robust solution for extracting polylines from tubular structures compared to RANSAC.

Authors with CRIS profile

Maximilian Rohleder Lehrstuhl für Informatik 5 (Mustererkennung) Andreas Maier Lehrstuhl für Informatik 5 (Mustererkennung)

How to cite

APA:

Parvin, M., Rohleder, M., Maier, A., & Kunze, H. (2025). Automatic Detection of Bronchoscopes on X-ray Images. In Christoph Palm, Katharina Breininger, Thomas Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Thomas M. Tolxdorff (Eds.), Bildverarbeitung für die Medizin 2025. Proceedings, German Conference on Medical Image Computing, Regensburg March 09-11, 2025 (pp. 248-253). Regensburg, DE: Cham: Springer.

MLA:

Parvin, Maryam, et al. "Automatic Detection of Bronchoscopes on X-ray Images." Proceedings of the German Conference on Medical Image Computing, 2025, Regensburg Ed. Christoph Palm, Katharina Breininger, Thomas Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Thomas M. Tolxdorff, Cham: Springer, 2025. 248-253.

BibTeX: Download