Classification of rib fracture types from postmortem computed tomography images using deep learning.

Autor: Ibanez V; Forensic Machine Learning Technology Center, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, CH-8057, Zurich, Switzerland., Jucker D; Zurich Institute of Forensic Medicine, 3D Centre Zurich, University of Zurich, Winterthurerstrasse 190/52, CH-8057, Zurich, Switzerland., Ebert LC; Zurich Institute of Forensic Medicine, 3D Centre Zurich, University of Zurich, Winterthurerstrasse 190/52, CH-8057, Zurich, Switzerland., Franckenberg S; Diagnostic and Interventional Radiology, University Hospital Zurich, Rämistrasse 100, 8091, Zurich, Switzerland.; Zurich Institute of Forensic Medicine, 3D Centre Zurich, University of Zurich, Winterthurerstrasse 190/52, CH-8057, Zurich, Switzerland., Dobay A; Forensic Machine Learning Technology Center, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, CH-8057, Zurich, Switzerland. akos.dobay@uzh.ch.
Jazyk: angličtina
Zdroj: Forensic science, medicine, and pathology [Forensic Sci Med Pathol] 2023 Nov 16. Date of Electronic Publication: 2023 Nov 16.
DOI: 10.1007/s12024-023-00751-x
Abstrakt: Human or time resources can sometimes fall short in medical image diagnostics, and analyzing images in full detail can be a challenging task. With recent advances in artificial intelligence, an increasing number of systems have been developed to assist clinicians in their work. In this study, the objective was to train a model that can distinguish between various fracture types on different levels of hierarchical taxonomy and detect them on 2D-image representations of volumetric postmortem computed tomography (PMCT) data. We used a deep learning model based on the ResNet50 architecture that was pretrained on ImageNet data, and we used transfer learning to fine-tune it to our specific task. We trained our model to distinguish between "displaced," "nondisplaced," "ad latus," "ad longitudinem cum contractione," and "ad longitudinem cum distractione" fractures. Radiographs with no fractures were correctly predicted in 95-99% of cases. Nondisplaced fractures were correctly predicted in 80-86% of cases. Displaced fractures of the "ad latus" type were correctly predicted in 17-18% of cases. The other two displaced types of fractures, "ad longitudinem cum contractione" and "ad longitudinem cum distractione," were correctly predicted in 70-75% and 64-75% of cases, respectively. The model achieved the best performance when the level of hierarchical taxonomy was high, while it had more difficulties when the level of hierarchical taxonomy was lower. Overall, deep learning techniques constitute a reliable solution for forensic pathologists and medical practitioners seeking to reduce workload.
(© 2023. The Author(s).)
Databáze: MEDLINE
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