Int J Comput Assist Radiol Surg - Assessing performance in brain tumor resection using a novel virtual reality simulator.


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RPOSE: NeuroTouch is a virtual reality (VR) simulator developed for neurosurgical skill training. Validation demonstrating that the system is useful and reliable is required for formal adoption into training curriculums. Face and content validity have been demonstrated for some neurosurgical simulators, but construct validity remains difficult to establish. A pilot validation study was conducted for a NeuroTouch training exercise.METHODS: Participants completed the internal resection of a simulated convexity meningioma and filled out questionnaires to provide feedback on the experience. Performance metrics included volume of tissues removed, tool path lengths, duration of excessive forces applied and efficient use of the aspirator. Results were analyzed according to participants' level of training, gender, handedness, surgical experience in meningioma removal and hours/week playing musical instruments or video games.RESULTS: Seventy-two participants (10 medical students, 18 junior residents and 44 senior residents) were enrolled. Analyses demonstrated statistically significant increase in tumor removed and efficiency of ultrasonic aspirator use between medical students and residents, but not between junior and senior residents. After covariate adjustment for the number of meningioma cases operated on, multivariate analysis of the level of training became nonsignificant. Participants judged the exercise appropriate and realistic, desiring use of the system in current training programs.CONCLUSION: We have conducted a pilot validation study for the NeuroTouch tumor resection scenario and demonstrated for the first time, face, content and construct validity of a VR neurosurgical simulation exercise. Future full-scale studies will be conducted in noncompetitive settings and incorporate expert participants.

Resumo Limpo

rpose neurotouch virtual realiti vr simul develop neurosurg skill train valid demonstr system use reliabl requir formal adopt train curriculum face content valid demonstr neurosurg simul construct valid remain difficult establish pilot valid studi conduct neurotouch train exercisemethod particip complet intern resect simul convex meningioma fill questionnair provid feedback experi perform metric includ volum tissu remov tool path length durat excess forc appli effici use aspir result analyz accord particip level train gender handed surgic experi meningioma remov hoursweek play music instrument video gamesresult seventytwo particip medic student junior resid senior resid enrol analys demonstr statist signific increas tumor remov effici ultrason aspir use medic student resid junior senior resid covari adjust number meningioma case oper multivari analysi level train becam nonsignific particip judg exercis appropri realist desir use system current train programsconclus conduct pilot valid studi neurotouch tumor resect scenario demonstr first time face content construct valid vr neurosurg simul exercis futur fullscal studi will conduct noncompetit set incorpor expert particip

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