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Ultrasound-guided facet joint injection training using Perk Tutor.
1Department of Electrical and Computer Engineering, Queen's University, Kingston, ON, Canada.
International Journal of Computer Assisted Radiology and Surgery
|January 19, 2013
Summary
Augmented reality training with Perk Tutor significantly improved ultrasound-guided facet joint injection success rates compared to traditional methods in a pilot study.
Area of Science:
- Medical Education
- Interventional Radiology
- Pain Management
Background:
- Facet syndrome is a common cause of chronic lower back pain, often treated with facet joint injections.
- Ultrasound (US) guidance enhances needle accuracy for facet joint injections but requires specialized physician skills.
- Current training for US-guided procedures may not adequately prepare physicians for the complexities of image interpretation and needle manipulation.
Purpose of the Study:
- To evaluate the efficacy of an augmented reality (AR) training system, Perk Tutor, for ultrasound-guided facet joint injections.
- To compare the performance of physicians trained with Perk Tutor against those receiving traditional training methods.
- To assess the impact of AR training on the success rate of US-guided facet joint injections.
Main Methods:
- A pilot study involved 26 pre-medical undergraduate students divided into two groups: one using Perk Tutor and a control group receiving traditional training.
- The Perk Tutor system was configured for percutaneous lumbar spine procedures, simulating ultrasound-guided needle insertions.
- Training effectiveness was measured by the success rate of the simulated facet joint injections.
Main Results:
- The Perk Tutor Trained group achieved a mean success rate of 61.5%, significantly higher than the Control group's 38.5%.
- No significant differences were found in procedure times or needle path lengths between the two training groups.
- These findings suggest AR training enhances procedural accuracy in a simulated environment.
Conclusions:
- Perk Tutor offers a promising augmented reality training solution for improving skills in ultrasound-guided facet joint injections.
- The study indicates that AR-based training can enhance the success rates of physicians performing these procedures on synthetic models.
- Further research is warranted to validate these findings in clinical settings and with experienced physicians.

