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Related Experiment Videos

Virtual reality computer simulation.

T P Grantcharov1, J Rosenberg, E Pahle

  • 1Department of Surgical Gastroenterology L, Aarhus University, Kommunehospialet, DK- 8000 Aarhus, Denmark. ttgrant@dadlnet.dk

Surgical Endoscopy
|May 19, 2001
PubMed
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Virtual reality computer simulation, like the Minimally Invasive Surgical Trainer (MIST VR), shows promise for objectively assessing surgical laparoscopic skills. Performance on the simulator correlated significantly with in vivo performance in an animal model.

Area of Science:

  • Surgical Education
  • Medical Simulation
  • Minimally Invasive Surgery

Background:

  • Objective assessment of surgical psychomotor skills is crucial for modern training.
  • Virtual reality (VR) computer systems offer potential for skill assessment but lack widespread acceptance.
  • Validation of VR simulation for evaluating laparoscopic skills is needed.

Purpose of the Study:

  • To validate the role of virtual reality computer simulation in evaluating surgical laparoscopic skills.
  • To assess the correlation between performance on a VR simulator and in vivo performance.

Main Methods:

  • 14 surgical residents performed tasks on the Minimally Invasive Surgical Trainer (MIST VR).
  • Residents subsequently performed a laparoscopic cholecystectomy on pigs and were re-tested on the MIST VR.

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  • In vivo performance was evaluated by experienced surgeons; VR performance metrics included errors and economy of motion.

    • Main Results:

    • Significant correlations were found between in vivo error scores and three MIST VR tasks (p < 0.05).
    • In vivo economy scores significantly correlated with non-economy right-hand scores on five MIST VR tasks.
    • In vivo economy scores also correlated significantly with non-economy left-hand scores on one MIST VR task (p < 0.05).

    Conclusions:

    • Laparoscopic performance in an animal model significantly correlated with performance on the MIST VR computer simulator.
    • VR computer simulation appears to be a promising, objective method for assessing laparoscopic psychomotor skills.
    • This validates the use of VR simulators in surgical training and assessment.