Lavanchy, Joël L; Gonzalez, Cristians; Kassem, Hasan; Nett, Philipp C.; Mutter, Didier; Padoy, Nicolas (2023). Proposal and multicentric validation of a laparoscopic Roux-en-Y gastric bypass surgery ontology. Surgical endoscopy, 37(3), pp. 2070-2077. Springer-Verlag 10.1007/s00464-022-09745-2
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BACKGROUND
Phase and step annotation in surgical videos is a prerequisite for surgical scene understanding and for downstream tasks like intraoperative feedback or assistance. However, most ontologies are applied on small monocentric datasets and lack external validation. To overcome these limitations an ontology for phases and steps of laparoscopic Roux-en-Y gastric bypass (LRYGB) is proposed and validated on a multicentric dataset in terms of inter- and intra-rater reliability (inter-/intra-RR).
METHODS
The proposed LRYGB ontology consists of 12 phase and 46 step definitions that are hierarchically structured. Two board certified surgeons (raters) with > 10 years of clinical experience applied the proposed ontology on two datasets: (1) StraBypass40 consists of 40 LRYGB videos from Nouvel Hôpital Civil, Strasbourg, France and (2) BernBypass70 consists of 70 LRYGB videos from Inselspital, Bern University Hospital, Bern, Switzerland. To assess inter-RR the two raters' annotations of ten randomly chosen videos from StraBypass40 and BernBypass70 each, were compared. To assess intra-RR ten randomly chosen videos were annotated twice by the same rater and annotations were compared. Inter-RR was calculated using Cohen's kappa. Additionally, for inter- and intra-RR accuracy, precision, recall, F1-score, and application dependent metrics were applied.
RESULTS
The mean ± SD video duration was 108 ± 33 min and 75 ± 21 min in StraBypass40 and BernBypass70, respectively. The proposed ontology shows an inter-RR of 96.8 ± 2.7% for phases and 85.4 ± 6.0% for steps on StraBypass40 and 94.9 ± 5.8% for phases and 76.1 ± 13.9% for steps on BernBypass70. The overall Cohen's kappa of inter-RR was 95.9 ± 4.3% for phases and 80.8 ± 10.0% for steps. Intra-RR showed an accuracy of 98.4 ± 1.1% for phases and 88.1 ± 8.1% for steps.
CONCLUSION
The proposed ontology shows an excellent inter- and intra-RR and should therefore be implemented routinely in phase and step annotation of LRYGB.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Visceral Surgery 04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine |
UniBE Contributor: |
Lavanchy, Joël Lukas, Nett, Philipp C. |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
0930-2794 |
Publisher: |
Springer-Verlag |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
28 Oct 2022 14:12 |
Last Modified: |
17 Mar 2023 00:12 |
Publisher DOI: |
10.1007/s00464-022-09745-2 |
PubMed ID: |
36289088 |
Uncontrolled Keywords: |
Inter-rater reliability Intra-rater reliability Laparoscopic Roux-en-Y gastric bypass Ontology Surgical data science |
BORIS DOI: |
10.48350/174227 |
URI: |
https://boris.unibe.ch/id/eprint/174227 |
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