UltraBones100k: An Ultrasound Image Dataset with CT-Derived Labels for Lower Extremity Long Bone Surface Segmentation

• URL: http://arxiv.org/abs/2502.03783v1
• Date: Thu, 06 Feb 2025 05:11:29 GMT
• Title: UltraBones100k: An Ultrasound Image Dataset with CT-Derived Labels for Lower Extremity Long Bone Surface Segmentation
• Authors: Luohong Wu, Nicola A. Cavalcanti, Matthias Seibold, Giuseppe Loggia, Lisa Reissner, Jonas Hein, Silvan Beeler, Arnd Viehöfer, Stephan Wirth, Lilian Calvet, Philipp Fürnstahl,
• Abstract summary: We propose a methodology for collecting exvivo ultrasound datasets with automatically generated bone labels. The proposed labels are derived by accurately superimposing tracked bone CT models onto the tracked ultrasound images. A neural network for bone segmentation is trained on the collected dataset and its predictions are compared to expert manual labels.
• Score: 0.5591588514747428
• License:
• Abstract: Ultrasound-based bone surface segmentation is crucial in computer-assisted orthopedic surgery. However, ultrasound images have limitations, including a low signal-to-noise ratio, and acoustic shadowing, which make interpretation difficult. Existing deep learning models for bone segmentation rely primarily on costly manual labeling by experts, limiting dataset size and model generalizability. Additionally, the complexity of ultrasound physics and acoustic shadow makes the images difficult for humans to interpret, leading to incomplete labels in anechoic regions and limiting model performance. To advance ultrasound bone segmentation and establish effective model benchmarks, larger and higher-quality datasets are needed. We propose a methodology for collecting ex-vivo ultrasound datasets with automatically generated bone labels, including anechoic regions. The proposed labels are derived by accurately superimposing tracked bone CT models onto the tracked ultrasound images. These initial labels are refined to account for ultrasound physics. A clinical evaluation is conducted by an expert physician specialized on orthopedic sonography to assess the quality of the generated bone labels. A neural network for bone segmentation is trained on the collected dataset and its predictions are compared to expert manual labels, evaluating accuracy, completeness, and F1-score. We collected the largest known dataset of 100k ultrasound images of human lower limbs with bone labels, called UltraBones100k. A Wilcoxon signed-rank test with Bonferroni correction confirmed that the bone alignment after our method significantly improved the quality of bone labeling (p < 0.001). The model trained on UltraBones100k consistently outperforms manual labeling in all metrics, particularly in low-intensity regions (320% improvement in completeness at a distance threshold of 0.5 mm).

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