Interventional radiology virtual simulator for liver biopsy.

Area of Science:

• Medical Simulation
• Interventional Radiology Training
• Computer Science in Medicine

Background:

• Traditional Interventional Radiology (IR) training relies on the apprenticeship model, which faces limitations due to working hour regulations, patient safety concerns, and variable clinical exposure.
• Trainees' inexperience and inconsistent access to diverse cases and emergencies hinder skill acquisition in IR procedures.
• There is a need for supplementary training tools to enhance the learning of invasive procedures in IR.

Purpose of the Study:

• To develop and validate a computer-based simulation for visceral needle puncture procedures.
• To create a realistic and effective training tool for Interventional Radiology trainees.
• To address the challenges associated with traditional apprenticeship-based IR training.

Main Methods:

• Development of a real-time simulation framework integrating segmentation, physically based modeling, haptics rendering, and pseudo-ultrasound generation.
• Incorporation of a physical mannequin within an immersive computerized virtual environment.
• Collaboration between computer scientists, clinicians, clinical engineers, and occupational psychologists.

Main Results:

• A robust, real-time simulation environment was technically implemented, combining physical and virtual components.
• Validation studies (face, content, construct) demonstrated the framework's reliability and effectiveness.
• The simulation showed potential for teaching visceral needle puncture skills.

Conclusions:

• A simulator for ultrasound-guided liver biopsy has been successfully developed.
• The simulator incorporates functionalities and metrics derived from cognitive task analysis.
• This framework offers a valuable adjunct to traditional training, particularly for practicing core skills in visceral needle puncture.