Design and evaluation of a portable laparoscopic training system using virtual reality

Mohsen Zahiri, Ryan Booton, Joseph Ka-Chun Siu, Carl A Nelson

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The ubiquitous nature of laparoscopic surgery and the decreased training time available for surgeons are driving an increased need for effective training systems to help surgeons learn different procedures. A cost-effective and user-friendly simulator has been designed to imitate specific training tasks for laparoscopic surgery in virtual environments via image processing and computer vision. The capability of using various actual surgical instruments suited for these specific procedures gives heightened fidelity to the simulator. Image processing via MATLAB software provides real-time mapping of the graspers in the workspace to the virtual reality (VR) environment (VIZARD software). Two different tasks (peg transfer and needle passing) were designed to evaluate trainees and compare their performance with characteristics of expert surgeons. Pilot testing of the system was carried out with 11 subjects to validate the similarity of this device with an existing surgical box trainer. Task completion time and muscle activity have been used as metrics for evaluation. The decrease in completion time for all subjects suggests similarity of skills transfer for both simulators. In addition, the p-value of muscle activity showed no significant differences for most muscles in the peg transfer task when using either the VR or physical analog environment and no significant differences for about half of the muscles in the needle passing task. Based on the results, the new proposed VR simulator appears to be a viable alternative to help trainees gain laparoscopic skills.

Original languageEnglish (US)
Article number011002
JournalJournal of Medical Devices, Transactions of the ASME
Volume11
Issue number1
DOIs
StatePublished - Mar 1 2017

Fingerprint

Virtual reality
Muscle
Simulators
Muscles
Needles
Laparoscopy
Surgery
Image processing
Software
Surgical Instruments
Computer vision
MATLAB
Costs and Cost Analysis
Equipment and Supplies
Testing
Surgeons
Costs

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Biomedical Engineering

Cite this

Design and evaluation of a portable laparoscopic training system using virtual reality. / Zahiri, Mohsen; Booton, Ryan; Siu, Joseph Ka-Chun; Nelson, Carl A.

In: Journal of Medical Devices, Transactions of the ASME, Vol. 11, No. 1, 011002, 01.03.2017.

Research output: Contribution to journalArticle

@article{2d649267998449f99144a05aad04c424,
title = "Design and evaluation of a portable laparoscopic training system using virtual reality",
abstract = "The ubiquitous nature of laparoscopic surgery and the decreased training time available for surgeons are driving an increased need for effective training systems to help surgeons learn different procedures. A cost-effective and user-friendly simulator has been designed to imitate specific training tasks for laparoscopic surgery in virtual environments via image processing and computer vision. The capability of using various actual surgical instruments suited for these specific procedures gives heightened fidelity to the simulator. Image processing via MATLAB software provides real-time mapping of the graspers in the workspace to the virtual reality (VR) environment (VIZARD software). Two different tasks (peg transfer and needle passing) were designed to evaluate trainees and compare their performance with characteristics of expert surgeons. Pilot testing of the system was carried out with 11 subjects to validate the similarity of this device with an existing surgical box trainer. Task completion time and muscle activity have been used as metrics for evaluation. The decrease in completion time for all subjects suggests similarity of skills transfer for both simulators. In addition, the p-value of muscle activity showed no significant differences for most muscles in the peg transfer task when using either the VR or physical analog environment and no significant differences for about half of the muscles in the needle passing task. Based on the results, the new proposed VR simulator appears to be a viable alternative to help trainees gain laparoscopic skills.",
author = "Mohsen Zahiri and Ryan Booton and Siu, {Joseph Ka-Chun} and Nelson, {Carl A}",
year = "2017",
month = "3",
day = "1",
doi = "10.1115/1.4034881",
language = "English (US)",
volume = "11",
journal = "Journal of Medical Devices, Transactions of the ASME",
issn = "1932-6181",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "1",

}

TY - JOUR

T1 - Design and evaluation of a portable laparoscopic training system using virtual reality

AU - Zahiri, Mohsen

AU - Booton, Ryan

AU - Siu, Joseph Ka-Chun

AU - Nelson, Carl A

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The ubiquitous nature of laparoscopic surgery and the decreased training time available for surgeons are driving an increased need for effective training systems to help surgeons learn different procedures. A cost-effective and user-friendly simulator has been designed to imitate specific training tasks for laparoscopic surgery in virtual environments via image processing and computer vision. The capability of using various actual surgical instruments suited for these specific procedures gives heightened fidelity to the simulator. Image processing via MATLAB software provides real-time mapping of the graspers in the workspace to the virtual reality (VR) environment (VIZARD software). Two different tasks (peg transfer and needle passing) were designed to evaluate trainees and compare their performance with characteristics of expert surgeons. Pilot testing of the system was carried out with 11 subjects to validate the similarity of this device with an existing surgical box trainer. Task completion time and muscle activity have been used as metrics for evaluation. The decrease in completion time for all subjects suggests similarity of skills transfer for both simulators. In addition, the p-value of muscle activity showed no significant differences for most muscles in the peg transfer task when using either the VR or physical analog environment and no significant differences for about half of the muscles in the needle passing task. Based on the results, the new proposed VR simulator appears to be a viable alternative to help trainees gain laparoscopic skills.

AB - The ubiquitous nature of laparoscopic surgery and the decreased training time available for surgeons are driving an increased need for effective training systems to help surgeons learn different procedures. A cost-effective and user-friendly simulator has been designed to imitate specific training tasks for laparoscopic surgery in virtual environments via image processing and computer vision. The capability of using various actual surgical instruments suited for these specific procedures gives heightened fidelity to the simulator. Image processing via MATLAB software provides real-time mapping of the graspers in the workspace to the virtual reality (VR) environment (VIZARD software). Two different tasks (peg transfer and needle passing) were designed to evaluate trainees and compare their performance with characteristics of expert surgeons. Pilot testing of the system was carried out with 11 subjects to validate the similarity of this device with an existing surgical box trainer. Task completion time and muscle activity have been used as metrics for evaluation. The decrease in completion time for all subjects suggests similarity of skills transfer for both simulators. In addition, the p-value of muscle activity showed no significant differences for most muscles in the peg transfer task when using either the VR or physical analog environment and no significant differences for about half of the muscles in the needle passing task. Based on the results, the new proposed VR simulator appears to be a viable alternative to help trainees gain laparoscopic skills.

UR - http://www.scopus.com/inward/record.url?scp=85007507410&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85007507410&partnerID=8YFLogxK

U2 - 10.1115/1.4034881

DO - 10.1115/1.4034881

M3 - Article

VL - 11

JO - Journal of Medical Devices, Transactions of the ASME

JF - Journal of Medical Devices, Transactions of the ASME

SN - 1932-6181

IS - 1

M1 - 011002

ER -