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Updated: Jan 14, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy
Published on: May 19, 2022
Artificial-Intelligence-based Surgical Phase Recognition in Robot-Assisted Radical Prostatectomy and Cross-Surgeon
Yuichiro Konnai1, Keishiro Fukumoto2, Masashi Takeuchi3
1Department of Urology, Keio University School of Medicine, Shinjuku-Ku, Tokyo, Japan.
An artificial intelligence (AI) system was developed to automatically recognize surgical phases in robot-assisted radical prostatectomy (RARP). This AI demonstrated high accuracy and generalizability across multiple surgeons, showing potential for surgical quality assessment and education.
Area of Science:
- Robotics and Artificial Intelligence in Medicine
- Surgical Technology
- Medical Informatics
Background:
- Artificial intelligence (AI) applications in surgery are currently limited.
- An AI system was developed to automatically recognize surgical phases during robot-assisted radical prostatectomy (RARP).
- Cross-surgeon validation was performed to confirm the AI system's accuracy.
Purpose of the Study:
- To develop and validate an AI system for automated surgical phase recognition in RARP.
- To assess the AI system's accuracy and generalizability across different surgeons.
- To explore the potential of AI in evaluating surgical quality and enhancing surgical education.
Main Methods:
- Analysis of clinical data from 102 RARP patients.
- Development of an AI model using Temporal Convolutional Networks for the Operating Room (TeCNO).
- Classification of surgical operations into nine phases with surgeon-annotated video data for AI training and validation.
Main Results:
- The AI model was trained and validated on a large dataset of surgical videos (over 1.1 million frames).
- High precision of 0.94 was achieved when analyzing videos from the primary surgeon.
- A precision of 0.83 was obtained when analyzing videos from multiple other surgeons, indicating generalizability.
Conclusions:
- The developed AI system demonstrates high accuracy and generalizability across different surgeons in RARP.
- The AI has the potential to serve as a tool for objective surgical quality assessment.
- This AI can provide valuable feedback to surgeons and improve surgical education effectiveness.
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