Development of recognised position-guided navigation system

Masaru Kanehira*, Tomoyoshi Okamoto, Kyohei Abe, Jungo Yasuda, Shinji Onda, Yasuro Futagawa, Toru Ikegami, Naoki Suzuki, Asaki Hattori

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Background: Previously, we developed an image-guided navigation system (IG-NS) incorporating augmented reality technology. Nevertheless, the system could still only aid the operator by presenting imagery and was short of achieving the goal of developing a real navigation system. Therefore, we developed a recognised position-guided navigation system (RP-NS) and herein reported the functionality and usefulness of this system in a phantom model for clinical applications. Methods: We developed RP-NS which was reconstructed by adding the positional recognition and instruction functions with the cautions by displaying the images on the monitor with a voice to the IG-NS. We evaluated accuracy of positional recognition and instruction functions using phantom model. By utilising the chronological recording of the tip position of the surgical apparatus, the surgical precision of the operators was assessed. Finally, the feasibility of improvements in surgical precision using this system was evaluated. Results: The RP-NS indicated an accuracy of the position recognition functions with an error of 2.7 mm. The surgeons could perform partial hepatectomies within mean value of 7.5% error as compared with calculated volume according to the instruction. Improvements in surgical precision using this system were obtained on the surgeons with different levels. Conclusions: The RP-NS was highly effective as a navigation system owing to precise positional recognition and adequate instruction functions. Therefore, these results indicate that the use of this system may complement differences in proficiency, and numerically evaluate surgical skills and analyse tendencies of surgeons.

Original languageEnglish
Article numbere2322
JournalInternational Journal of Medical Robotics and Computer Assisted Surgery
Issue number6
Publication statusPublished - 2021 Dec
Externally publishedYes


  • hepatectomy
  • navigation surgery
  • recognised position-guided navigation system

ASJC Scopus subject areas

  • Surgery
  • Biophysics
  • Computer Science Applications


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