2026-08-20 国立がん研究センター,株式会社Jmees
＜関連情報＞
- https://www.ncc.go.jp/jp/information/researchtopics/2026/0820/index.html
- https://www.nature.com/articles/s41746-026-02936-4
人工知能を用いた骨盤リンパ節郭清術における外科医の解剖学的認識の向上 Enhancing anatomical recognition by surgeons during pelvic lymph node dissection using artificial intelligence
Daichi Kitaguchi,Shin Takenaka,Yasukazu Nakanishi,Shun Yamaguchi,Tomohiro Noda,Suguru Odajima,Junki Onishi,Yuki Koike,Kohei Hirose,Madoka Kataoka,Mitsumasa Homma,Atsushi Kouno,Hiroki Matsuzaki,Nobuyoshi Takeshita,Hitoshi Masuda,Hiroshi Tanabe & Yuichiro Tsukada
npj Digital Medicine Published:30 June 2026
DOI:https://doi.org/10.1038/s41746-026-02936-4 Early provide
Abstract
The lateral pelvis is a critical anatomical region in colorectal, gynecological, and urological surgeries. However, its anatomical complexity and variability pose significant challenges for pelvic lymph node dissection (PLND). This study aimed to develop an artificial intelligence (AI) model to identify key anatomical structures relevant to PLND and evaluate whether AI assistance enhances surgeons’ ability to recognize pelvic anatomical features. Thirty-six surgeons representing colorectal, gynecological, and urological specialties, with varying experience levels, reviewed 640 video snippets (0.5 s each) from PLND procedures. The model was trained on 23,259 annotated and 653 unannotated images extracted from 293 PLND procedure videos. Threefold cross-validation yielded Dice similarity coefficients of 0.6483 for the ureter, 0.8654 for the obturator nerve, 0.8619 for the external iliac artery, and 0.8736 for the external iliac vein. Across all structures, AI assistance led to a significant improvement in sensitivity and specificity among participating surgeons (p < .001). Our findings suggest that the proposed AI model may assist surgeons in identifying pelvic anatomical structures across different specialties and experience levels. Further studies using continuous intraoperative workflows will be required to determine its impact on clinical practice.
