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Automatic tip detection of surgical instruments in biportal endoscopic spine surgery

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Abstract
Background: Recent advances in robotics and deep learning can be used in endoscopic surgeries and can provide numerous advantages by freeing one of the surgeon's hands. This study aims to automatically detect the tip of the instrument, localize a point, and evaluate the detection accuracy in biportal endoscopic spine surgery (BESS). The tip detection could serve as a preliminary study for the development of vision intelligence in robotic endoscopy.

Methods: The dataset contains 2310 frames from 9 BESS videos with x and y coordinates of the tip annotated by an expert. We trained two state-of-the-art detectors, RetinaNet and YOLOv2, with bounding boxes centered around the tip annotations with specific margin sizes to determine the optimal margin size for detecting the tip of the instrument and localizing the point. We calculated the recall, precision, and F1-score with a fixed box size for both ground truth tip coordinates and predicted midpoints to compare the performance of the models trained with different margin size bounding boxes.

Results: For RetinaNet, a margin size of 150 pixels was optimal with a recall of 1.000, precision of 0.733, and F1 -score of 0.846. For YOLOv2, a margin size of 150 pixels was optimal with a recall of 0.864, precision of 0.808, F1-score of 0.835. Also, the optimal margin size of 150 pixels of RetinaNet was used to cross-validate its overall robustness. The resulting mean recall, precision, and F1-score were 1.000 +/- 0.000, 0.767 +/- 0.033, and 0.868 +/- 0.022, respectively.

Conclusions: In this study, we evaluated an automatic tip detection method for surgical instruments in endoscopic surgery, compared two state-of-the-art detection algorithms, RetinaNet and YOLOv2, and validated the robustness with cross-validation. This method can be applied in different types of endoscopy tip detection.
Author(s)
조수민김영곤정진훈김인환이호진김남국
Issued Date
2021
Type
Article
Keyword
Convolutional neural networkDeep learningDetectionEndoscopic surgeryLocalization
DOI
10.1016/j.compbiomed.2021.104384
URI
https://oak.ulsan.ac.kr/handle/2021.oak/7984
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_proquest_miscellaneous_2514604018&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Automatic%20tip%20detection%20of%20surgical%20instruments%20in%20biportal%20endoscopic%20spine%20surgery&offset=0&pcAvailability=true
Publisher
COMPUTERS IN BIOLOGY AND MEDICINE
Location
미국
Language
영어
ISSN
0010-4825
Citation Volume
133
Citation Start Page
0
Citation End Page
0
Appears in Collections:
Medicine > Medicine
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