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Interventional radiology virtual simulator for liver biopsy

  • P. F. Villard
  • F. P. Vidal
  • L. ap Cenydd
  • R. Holbrey
  • S. Pisharody
  • S. Johnson
  • A. Bulpitt
  • N. W. John
  • F. Bello
  • D. Gould
Original Article

Abstract

Purpose

   Training in Interventional Radiology currently uses the apprenticeship model, where clinical and technical skills of invasive procedures are learnt during practice in patients. This apprenticeship training method is increasingly limited by regulatory restrictions on working hours, concerns over patient risk through trainees’ inexperience and the variable exposure to case mix and emergencies during training. To address this, we have developed a computer-based simulation of visceral needle puncture procedures.

Methods

   A real-time framework has been built that includes: segmentation, physically based modelling, haptics rendering, pseudo-ultrasound generation and the concept of a physical mannequin. It is the result of a close collaboration between different universities, involving computer scientists, clinicians, clinical engineers and occupational psychologists.

Results

   The technical implementation of the framework is a robust and real-time simulation environment combining a physical platform and an immersive computerized virtual environment. The face, content and construct validation have been previously assessed, showing the reliability and effectiveness of this framework, as well as its potential for teaching visceral needle puncture.

Conclusion

   A simulator for ultrasound-guided liver biopsy has been developed. It includes functionalities and metrics extracted from cognitive task analysis. This framework can be useful during training, particularly given the known difficulties in gaining significant practice of core skills in patients.

Keywords

Biomedical computing Image segmentation Simulation Virtual reality 

Notes

Acknowledgments

We would like to thank the late Roger Phillips for his significant contributions to the project. We acknowledge funding from the UK’s Department of Health through the Health Technology Devices programme.

Conflict of Interest

P. F. Villard, F. P. Vidal, L. ap Cenydd, R. Holbrey, S. Pisharody, S. Johnson, A. Bulpitt, N.W. John, F. Bello and D. Gould declare that they have no conflict of interest.

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Copyright information

© CARS 2013

Authors and Affiliations

  • P. F. Villard
    • 2
    • 1
  • F. P. Vidal
    • 3
  • L. ap Cenydd
    • 3
  • R. Holbrey
    • 4
  • S. Pisharody
    • 5
  • S. Johnson
    • 6
  • A. Bulpitt
    • 4
  • N. W. John
    • 3
  • F. Bello
    • 2
  • D. Gould
    • 7
  1. 1.LORIAUniversity of LorraineNancyFrance
  2. 2.Imperial CollegeLondonUK
  3. 3.School of Computer ScienceBangor UniversityBangorUK
  4. 4.School of ComputingUniversity of LeedsLeedsUK
  5. 5.Department of Computer ScienceUniversity of HullKingston upon HullUK
  6. 6.Manchester Business SchoolUniversity of ManchesterManchesterUK
  7. 7.Royal Liverpool HospitalLiverpoolUK

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