Development of a Model for Training and Assessing Open Image-Guided Liver Tumor Ablation

Area of Science:

• Medical simulation
• Surgical training technologies

Background:

• Image-guided microwave ablation (MWA) requires advanced visual-spatial skills.
• Developing effective, low-cost training models is crucial for MWA proficiency.

Purpose of the Study:

• To create and evaluate a cost-effective model and curriculum for open ultrasound-guided liver tumor MWA.
• To establish performance benchmarks for novice MWA trainees.

Main Methods:

• Constructed a high-fidelity abdominal model with simulated tumors in bovine livers ($30 cost).
• Experienced physicians established performance metrics (time, passes, repositioning, ablation percentage).
• Novice trainees completed a deliberate practice curriculum, with performance recorded pre- and post-training.

Main Results:

• The model received high ratings for realism (8/10) and training utility (10/10).
• Simulated tumors were clearly visualized via ultrasound.
• Trainees showed significant improvement in all performance metrics after the curriculum.

Conclusions:

• A cost-effective, high-fidelity MWA model and curriculum were successfully developed.
• This training allows novices to achieve proficiency using clear target metrics before clinical practice.