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Virtual reality, ultrasound-guided liver biopsy simulator: Development and performance discrimination

Johnson, SJ, Hunt, CM, Woolnough, HM, Crawshaw, M, Kilkenny, C, Gould, DA, England, A, Sinha, A and Villard, PF 2012, 'Virtual reality, ultrasound-guided liver biopsy simulator: Development and performance discrimination' , British Journal of Radiology, 85 , pp. 555-561.

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Abstract

Objectives: The aim of this article was to identify and prospectively investigate simulated ultrasound-guided targeted liver biopsy performance metrics as differentiators between levels of expertise in interventional radiology. Methods: Task analysis produced detailed procedural step documentation allowing identification of critical procedure steps and performance metrics for use in a virtual reality ultrasound-guided targeted liver biopsy procedure. Consultant (n=14; male=11, female=3) and trainee (n=26; male=19, female=7) scores on the performance metrics were compared. Ethical approval was granted by the Liverpool Research Ethics Committee (UK). Independent t-tests and analysis of variance (ANOVA) investigated differences between groups. Results: Independent t-tests revealed significant differences between trainees and consultants on three performance metrics: targeting, p=0.018, t=22.487 (22.040 to 20.207); probe usage time, p=0.040, t=2.132 (11.064 to 427.983); mean needle length in beam, p=0.029, t=22.272 (20.028 to 20.002). ANOVA reported significant differences across years of experience (0–1, 1–2, 3+ years) on seven performance metrics: no-go area touched, p=0.012; targeting, p=0.025; length of session, p=0.024; probe usage time, p=0.025; total needle distance moved, p=0.038; number of skin contacts, p<0.001; total time in no-go area, p=0.008. More experienced participants consistently received better performance scores on all 19 performance metrics. Conclusion: It is possible to measure and monitor performance using simulation, with performance metrics providing feedback on skill level and differentiating levels of expertise. However, a transfer of training study is required.

Item Type: Article
Themes: Health and Wellbeing
Schools: Schools > School of Health Sciences > Centre for Health Sciences Research
Schools > School of Health Sciences
Journal or Publication Title: British Journal of Radiology
Publisher: British Institute of Radiology
Refereed: Yes
ISSN: 0007-1285
Related URLs:
Funders: National Institute for Health Research
Depositing User: Dr Andrew England
Date Deposited: 06 Sep 2013 15:39
Last Modified: 30 Nov 2015 23:44
URI: http://usir.salford.ac.uk/id/eprint/29468

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