Automatic Calculation of Cervical Spine Parameters Using Deep Learning: Development and Validation on an External Dataset.

Autor:	Nakarai H; Department of Spine Surgery and Neurosurgery, Schulthess Klinik, Zürich, Switzerland.; Department of Spine Surgery, Hospital for Special Surgery, New York, US.; Spine Group (UTSG), The University of Tokyo, Bunkyo-ku, Japan., Cina A; Department of Health Sciences and Technologies, ETH Zürich, Zürich, Switzerland.; Department of Teaching, Research and Development, Schulthess Klinik, Zürich, Switzerland., Jutzeler C; Department of Health Sciences and Technologies, ETH Zürich, Zürich, Switzerland., Grob A; Department of Spine Surgery and Neurosurgery, Schulthess Klinik, Zürich, Switzerland.; Department of Neurosurgery, University Hospital Zürich, Zürich, Switzerland., Haschtmann D; Department of Spine Surgery and Neurosurgery, Schulthess Klinik, Zürich, Switzerland., Loibl M; Department of Spine Surgery and Neurosurgery, Schulthess Klinik, Zürich, Switzerland., Fekete TF; Department of Spine Surgery and Neurosurgery, Schulthess Klinik, Zürich, Switzerland., Kleinstück F; Department of Spine Surgery and Neurosurgery, Schulthess Klinik, Zürich, Switzerland., Wilke HJ; Institute of Orthopaedic Research and Biomechanics, Centre for Trauma Research, Ulm University, Ulm, Germany., Tao Y; Institute of Orthopaedic Research and Biomechanics, Centre for Trauma Research, Ulm University, Ulm, Germany., Galbusera F; Department of Teaching, Research and Development, Schulthess Klinik, Zürich, Switzerland.
Jazyk:	angličtina
Zdroj:	Global spine journal [Global Spine J] 2023 Oct 09, pp. 21925682231205352. Date of Electronic Publication: 2023 Oct 09.
DOI:	10.1177/21925682231205352
Abstrakt:	Study Design: Retrospective data analysis. Objectives: This study aims to develop a deep learning model for the automatic calculation of some important spine parameters from lateral cervical radiographs. Methods: We collected two datasets from two different institutions. The first dataset of 1498 images was used to train and optimize the model to find the best hyperparameters while the second dataset of 79 images was used as an external validation set to evaluate the robustness and generalizability of our model. The performance of the model was assessed by calculating the median absolute errors between the model prediction and the ground truth for the following parameters: T1 slope, C7 slope, C2-C7 angle, C2-C6 angle, Sagittal Vertical Axis (SVA), C0-C2, Redlund-Johnell distance (RJD), the cranial tilting (CT) and the craniocervical angle (CCA). Results: Regarding the angles, we found median errors of 1.66° (SD 2.46°), 1.56° (1.95°), 2.46° (SD 2.55), 1.85° (SD 3.93°), 1.25° (SD 1.83°), .29° (SD .31°) and .67° (SD .77°) for T1 slope, C7 slope, C2-C7, C2-C6, C0-C2, CT, and CCA respectively. As concerns the distances, we found median errors of .55 mm (SD .47 mm) and .47 mm (.62 mm) for SVA and RJD respectively. Conclusions: In this work, we developed a model that was able to accurately predict cervical spine parameters from lateral cervical radiographs. In particular, the performances on the external validation set demonstrate the robustness and the high degree of generalizability of our model on images acquired in a different institution. Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Databáze:	MEDLINE
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