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An Image Information-Based Objective Assessment Method of Technical Manipulation Skills for Intravascular

Jin Guo¹, Maoxun Li², Yue Wang¹

¹School of Life Science, Beijing Institute of Technology, Beijing 100081, China.

Sensors (Basel, Switzerland)

|April 28, 2023

Summary

This study introduces a novel, sensor-free method for assessing surgeon skills in vascular interventional surgery. Analyzing video data, it accurately evaluates catheter/guidewire manipulation, improving surgical training.

Keywords:

force and image data intravascular interventions machine learning objective technical skill assessment

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Area of Science:

Medical Engineering
Surgical Skill Assessment
Image Analysis in Medicine

Background:

Vascular interventional surgery success depends on surgeon skill.
Existing skill assessment methods often use sensors, limiting natural movement.
Objective evaluation is crucial for surgical training.

Purpose of the Study:

To develop a sensor-free method for assessing surgeon manipulation skills in vascular interventional surgery.
To evaluate surgeon skill using image analysis of catheter/guidewire movements.
To improve the accuracy and applicability of surgical skill assessment.

Main Methods:

Developed an image-based assessment method using video sequences of catheter/guidewire motion.
Extracted manipulation features like speed peaks, slope variations, and collisions.
Incorporated contact force data from a 6-DoF F/T sensor.
Utilized a support vector machine (SVM) classification framework for skill level discrimination.

Main Results:

The proposed method achieved 97.02% accuracy in distinguishing expert from novice surgeons.
This accuracy surpasses existing research achievements in surgical skill assessment.
The sensor-free approach allows natural surgeon movements during data collection.

Conclusions:

The image-based, sensor-free method offers an accurate and practical approach to evaluating surgical skills.
This technique has significant potential for enhancing the training of novice surgeons in vascular interventional procedures.
Objective skill assessment without movement constraints is now feasible.