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  4. Estimating and abstracting the 3D structure of bones using neural networks on X-ray (2D) images
 
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2020
Zeitschriftenaufsatz
Titel

Estimating and abstracting the 3D structure of bones using neural networks on X-ray (2D) images

Abstract
Computing 3D bone models using traditional Computed Tomography (CT) requires a high-radiation dose, cost and time. We present a fully automated, domain-agnostic method for estimating the 3D structure of a bone from a pair of 2D X-ray images. Our triplet loss-trained neural network extracts a 128-dimensional embedding of the 2D X-ray images. A classifier then finds the most closely matching 3D bone shape from a predefined set of shapes. Our predictions have an average root mean square (RMS) distance of 1.08 mm between the predicted and true shapes, making our approach more accurate than the average achieved by eight other examined 3D bone reconstruction approaches. Each embedding extracted from a 2D bone image is optimized to uniquely identify the 3D bone CT from which the 2D image originated and can serve as a kind of fingerprint of each bone; possible applications include faster, image content-based bone database searches for forensic purposes.
Author(s)
Cavojska, Jana
Petrasch, Julian
Mattern, Denny
Fraunhofer-Institut für Offene Kommunikationssysteme FOKUS
Lehmann, Nicolas J.
Voisard, Agnès
Fraunhofer-Institut für Offene Kommunikationssysteme FOKUS
Böttcher, Peter
Zeitschrift
Communications biology. Online journal
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DOI
10.1038/s42003-020-1057-3
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Language
Englisch
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