2D/3D Registration of Acetabular Hip Implants Under Perspective Projection and Fully Differentiable Ellipse Fitting
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Abstract (arXiv)
This paper presents a novel method for estimating the orientation and the position of acetabular hip implants in total hip arthroplasty using full anterior-posterior hip fluoroscopy images. Our method accounts for distortions induced in the fluoroscope geometry, estimating acetabular component pose by creating a forward model of the perspective projection and implementing differentiable ellipse fitting for the similarity of our estimation from the ground truth. This approach enables precise estimation of the implant's rotation (anteversion, inclination) and the translation under the fluoroscope induced deformation. Experimental results from both numerically simulated and digitally reconstructed radiograph environments demonstrate high accuracy with minimal computational demands, offering enhanced precision and applicability in clinical and surgical settings.
Key facts. Cited by 1 paper in the map (data through 14 Oct 2026). Builds on 6 of its 15 references that are in the map. First posted on arXiv 10 Mar 2025.
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6 of 15 references.
References · 6
- 2015U-Net: Convolutional Networks for Biomedical Image Segmentationcited by 19,713
- 2018DeepDRR -- A Catalyst for Machine Learning in Fluoroscopy-guided Procedurescited by 55
- 2022Fast Auto-Differentiable Digitally Reconstructed Radiographs for Solving Inverse Problems in Intraoperative Imagingcited by 38
- 2019Automatic Annotation of Hip Anatomy in Fluoroscopy for Robust and Efficient 2D/3D Registrationcited by 29
- 2020Generalizing Spatial Transformers to Projective Geometry with Applications to 2D/3D Registrationcited by 21
- 2023Label Augmentation Method for Medical Landmark Detection in Hip Radiograph Imagescited by 2
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Citing papers per year: 2025: 1.
1 paper.