Explanipedia

External validation of a motion capture-based surgical skill assessment system in laparoscopic simulation training environments Open

Koki Ebina, Takashige Abe, Kiyohiko Hotta, Yan Lingbo, Chihiro Kamijo , et al. · 2025

Our real-time feedback system was viewed favorably by the participants, and the ML algorithm was a reliable method, especially the predicted GOALS score. This system could facilitate objective performance assessment, enhance simulation-bas…

Automatic Registration for Superimposed Display of Organs for a Development of Laparoscopic Surgery Navigation Open

Yoshifumi Kobayashi, Xiaoshuai Chen, Atsushi Konno, Kazuya Sase, Teppei Tsujita , et al. · 2025

Measurement and Interpolation for Data-Driven Pressure Distribution Rendering on a Finger Pad Open

Kazuya Sase, Rei ONODERA, Hikaru Nagano, Masashi Konyo · 2024

We propose a data-driven pressure distribution rendering method that uses the interpolation of experimentally obtained pressure values. The pressure data were collected using a pressure sensor array. The prediction was performed using line…

Surgical skill analysis focused on tissue traction in laparoscopic wet lab training Open

Koki Ebina, Takashige Abe, Madoka Higuchi, Kiyohiko Hotta, Jun Furumido , et al. · 2024

Development of a System for Determining Technique Level of Vascular Anastomosis Using Hand Motion Open

Xiaoshuai Chen, Taro SHOJI, Ryosuke Kowatari, Koki Ebina, Yoshifumi Kobayashi , et al. · 2024

In off-pump coronary artery bypass grafting (OPCAB), the coronary arteries are joined as the heart beats. This procedure requires high skill and experience to be performed reliably and quickly. Although training kits are commonly used for …

Validation and motion analyses of laparoscopic radical nephrectomy with Thiel-embalmed cadavers Open

Lingbo Yan, Koki Ebina, Takashige Abe, Masafumi Kon, Madoka Higuchi , et al. · 2024

Our aim was to develop practical training for laparoscopic surgery using Thielembalmed cadavers. Furthermore, in order to verbalize experts' motion characteristics and provide objective feedback to trainees, we initiated motion capture ana…

A surgical instrument motion measurement system for skill evaluation in practical laparoscopic surgery training Open

Koki Ebina, Takashige Abe, Lingbo Yan, Kiyohiko Hotta, Toshiaki Shichinohe , et al. · 2024

This study developed and validated a surgical instrument motion measurement system for skill evaluation during practical laparoscopic surgery training. Owing to the various advantages of laparoscopic surgery including minimal invasiveness,…

Validation of subcutaneous SED distribution in a simplified 3-D fingertip anatomical model Open

Haruki Kato, Kazuya Sase, Hikaru Nagano, Masashi Konyo · 2024

Development of a remote support system for trauma treatment Open

Daichi Aoki, Soichi Murakami, Shunsuke Komizunai, Kazuya Sase, Teppei Tsujita , et al. · 2024

Reproduction of Individual Differences in Finger Mechanical Properties Using Individualized Finger Models Open

Rei ONODERA, Haruki Kato, Kazuya Sase, Hikaru Nagano, Masashi Konyo · 2024

Modeling of an individual hand using a 3D scanner and its visual impression based on dimensional differences Open

Yuma Hosoya, Rei ONODERA, Kazuya Sase · 2024

Quantifying surgical skill using machine learning in Endoscopic Sinus Surgery Open

Kaito YAMADA, Masanobu Suzuki, Kou Miyaji, Koki Ebina, Kazuya Sase , et al. · 2024

A Method for Creating a 3D Subarachnoid Space Model for Neurosurgery Simulation Open

Xiaoshuai Chen, Y. Takahashi, M. Kato, Tomoki SUDA, Sayaka Shibuya , et al. · 2024

Proposal of Simulation-Based Surgical Navigation and Development of Laparoscopic Surgical Simulator that Reflects Motion of Surgical Instruments in Real-World Open

Sayaka Shibuya, Noriyuki Shido, Ryosuke Shirai, Kazuya Sase, Koki Ebina , et al. · 2023

This study proposes simulation-based surgical navigation concept and describes the development of a laparoscopic surgical simulator that reflects the motion of surgical instruments in the real world. In the proposed simulation-based surgic…

Skill evaluation for Endoscopic Sinus Surgery using machine learning Open

Kaito YAMADA, Masanobu Suzuki, Kou Miyaji, Koki Ebina, Kazuya Sase , et al. · 2023

Endoscopic sinus surgery (ESS) is one of the standard minimally invasive surgical procedures for diseases of a nasal cavity and paranasal sinuses. This paper describes the development and details of a surgeon skill classification system us…

Reproduction of Grasping Sensation by High-resolution Suction Tactile Display for Finger Pads Open

Akio Ichijo, Hikaru Nagano, Natsumi MORITA, Masashi Konyo, Kazuya Sase , et al. · 2023

Both cutaneous and kinesthetic sensations contribute to human dexterous manipulation performance. To realize skillful manipulation in VR environments, tactile and force senses must be reproduced with high realism. This study aims to develo…

Extension of Contact Initiation Range in Encountered-Type Haptic Display Using MR Fluid Open

Koki Watanabe, Kazuya Sase, Teppei Tsujita, Satoko Abiko · 2023

When using MR fluid to present the sensation of cutting, the fluid container is small, and the range in which the surgical tool and MR fluid can initiate contact is also small. In this study, we developed a control system that makes the fl…

Effects of Individual Dimension Differences on Simulation of Finger Deformation for Tactile Distribution Display Open

Kazuya Sase, Rei ONODERA, Haruki Kato, Natsumi MORITA, Hikaru Nagano , et al. · 2023

Human tactile perception is affected by individual differences in skin shape and material properties. In this study, we report the effects of individual differences in finger size on the strain energy density (SED) distribution in tactile …

The development of the data correction method and feature extraction for the skill evaluation of practical laparoscopic surgical training Open

Koki Ebina, Takashige Abe, Lingbo YAN, Kiyohiko Hotta, Masafumi Kon , et al. · 2023

This paper describes the details of the data correction method and feature extraction for skill evaluation of practical laparoscopic surgical training. To analyze the surgical dexterity in practical laparoscopic surgical training, the moti…

Basic Experiments Toward Mixed Reality Dynamic Navigation for Laparoscopic Surgery Open

Xiaoshuai Chen, Daisuke Sakai, Hiroaki Fukuoka, Ryosuke Shirai, Koki Ebina , et al. · 2022

Laparoscopic surgery is a minimally invasive procedure that is performed by viewing endoscopic camera images. However, the limited field of view of endoscopic cameras makes laparoscopic surgery difficult. To provide more visual information…

Moving Particle Semi-Implicit and Finite Element Method Coupled Analysis for Brain Shift Estimation Open

Akito Ema, Xiaoshuai Chen, Kazuya Sase, Teppei Tsujita, Atsushi Konno · 2022

Neuronavigation is a computer-assisted technique for presenting three-dimensional images of a patient’s brain to facilitate immediate and precise lesion localization by surgeons. Neuronavigation systems use preoperative medical images of p…

Automatic assessment of laparoscopic surgical skill competence based on motion metrics Open

Koki Ebina, Takashige Abe, Kiyohiko Hotta, Madoka Higuchi, Jun Furumido , et al. · 2022

The purpose of this study was to characterize the motion features of surgical devices associated with laparoscopic surgical competency and build an automatic skill-credential system in porcine cadaver organ simulation training. Participant…

Numerical Calculation Method for Brain Shift Based on Hydrostatics and Dynamic FEM Open

Xiaoshuai Chen, Ryosuke Shirai, Ken Masamune, Manabu Tamura, Yoshihiro Muragaki , et al. · 2022

During neurosurgery, brain deformation occurs because of gravity and leakage of the cerebrospinal fluid (CSF), which is referred to as brain shift. Brain shift is a serious problem in neuronavigation because neuronavigation relies on preop…

Objective evaluation of laparoscopic surgical skills in wet lab training based on motion analysis and machine learning Open

Koki Ebina, Takashige Abe, Kiyohiko Hotta, Madoka Higuchi, Jun Furumido , et al. · 2022

Superposition Display of Liver Model using Mixed Reality Technology for a Laparoscopic Surgery Support System Open

Kenta Ogasawara, Xiaoshuai Chen, Kazuya Sase, Teppei Tsujita, Atsushi Konno · 2022

In laparoscopic surgery, the problem is that endoscopic cameras have a narrow field of view and are often overlooked even if organs outside the field of view are damaged. As support, surgical navigation systems present the entire organ. Ho…

Reproduction of Grasping Sensation by High-resolution Suction Tactile Display for Finger Pads Open

Natsumi MORITA, Masashi Konyo, Hikaru Nagano, Kazuya Sase, Satoshi TADOKORO · 2022

This study aims to reproduce the grasping sensation with a high-resolution suction tactile display. We need a method to generate a suction pressure stimulus based on the strain energy distribution obtained by finite element simulation. In …

Parallel Link Mechanism with Redundant Passive Joints for 6DoF Finger-mounted Kinesthetic Display Open

Kang JUNHUI, Hikaru Nagano, Kazuya Sase, Masashi Konyo, Yuichi Tazaki , et al. · 2022

This paper developed 6Dof finger-mounted kinesthetic display for rendering force and torque cues simultaneously. The display is a modified model of the basic 6RSS parallel link mechanism by improving with redundant rotational joints. Compa…

Mixed reality simulation of organ grasping/dissection motion for laparoscopic surgery navigation Open

Sayaka Shibuya, Kazuya Sase, Xiaoshui CHEN, Shunsuke Komizunai, Teppei Tsujita , et al. · 2022

Laparoscopic surgery is very difficult for surgeons and requires time and experience to master the technique, so an enhanced surgical navigation system is needed to assist the surgeon. In this research, we will develop a simulation system …

Superposition Display of Soft Tissue using Mixed Reality Technology for a Laparoscopic Surgery Support System Open

Kenta Ogasawara, Xiaoshuai Chen, Kazuya Sase, Teppei Tsujita, Atsushi Konno · 2021

A laparoscopic surgery is a minimally invasive surgery that reduces the burden on the patient. However, main disadvantage of the laparoscopic surgery is the narrowness of the field of view provided by an endoscopic camera. Therefore, if an…

Development and verification of a laparoscopic surgery retraction simulator system linked with real space Open

Sayaka Shibuya, Kazuya Sase, Xiaoshui CHEN, Shunsuke Komizunai, Teppei Tsujita , et al. · 2021

Since laparoscopic surgery is performed through the images displayed on the monitor, it requires a higher degree of surgeons’ skills than open surgery, in which surgery is performed while directly checking the surgical field. In order to s…

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