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Erschienen in: International Journal of Computer Assisted Radiology and Surgery 4/2019

16.11.2018 | Original Article

“Deep-Onto” network for surgical workflow and context recognition

verfasst von: Hirenkumar Nakawala, Roberto Bianchi, Laura Erica Pescatori, Ottavio De Cobelli, Giancarlo Ferrigno, Elena De Momi

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 4/2019

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Abstract

Purpose

Surgical workflow recognition and context-aware systems could allow better decision making and surgical planning by providing the focused information, which may eventually enhance surgical outcomes. While current developments in computer-assisted surgical systems are mostly focused on recognizing surgical phases, they lack recognition of surgical workflow sequence and other contextual element, e.g., “Instruments.” Our study proposes a hybrid approach, i.e., using deep learning and knowledge representation, to facilitate recognition of the surgical workflow.

Methods

We implemented “Deep-Onto” network, which is an ensemble of deep learning models and knowledge management tools, ontology and production rules. As a prototypical scenario, we chose robot-assisted partial nephrectomy (RAPN). We annotated RAPN videos with surgical entities, e.g., “Step” and so forth. We performed different experiments, including the inter-subject variability, to recognize surgical steps. The corresponding subsequent steps along with other surgical contexts, i.e., “Actions,” “Phase” and “Instruments,” were also recognized.

Results

The system was able to recognize 10 RAPN steps with the prevalence-weighted macro-average (PWMA) recall of 0.83, PWMA precision of 0.74, PWMA F1 score of 0.76, and the accuracy of 74.29% on 9 videos of RAPN.

Conclusion

We found that the combined use of deep learning and knowledge representation techniques is a promising approach for the multi-level recognition of RAPN surgical workflow.

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Metadaten
Titel
“Deep-Onto” network for surgical workflow and context recognition
verfasst von
Hirenkumar Nakawala
Roberto Bianchi
Laura Erica Pescatori
Ottavio De Cobelli
Giancarlo Ferrigno
Elena De Momi
Publikationsdatum
16.11.2018
Verlag
Springer International Publishing
Erschienen in
International Journal of Computer Assisted Radiology and Surgery / Ausgabe 4/2019
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI
https://doi.org/10.1007/s11548-018-1882-8

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