Characterizing the learning curve of the VBLaST-PT© (Virtual Basic Laparoscopic Skill Trainer)
Characterizing the learning curve of the VBLaST-PT© (Virtual Basic Laparoscopic Skill Trainer)
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描述 VBLaST-PT©（虚拟基础腹腔镜技能训练器）的学习曲线
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
C. Cao
中科院分区：
文献类型：
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作者：
Likun Zhang;G. Sankaranarayanan;V. Arikatla;W. Ahn;C. Grosdemouge;J. Rideout;S. Epstein;S. De;S. Schwaitzberg;Daniel B. Jones;C. Cao
背景掌握腹腔镜手术技巧需要大量的时间和精力。虚拟基础腹腔镜技能训练器 (VBLaST-PT©) 正在开发为使用虚拟现实技术的腹腔镜手术基础 (FLS) 系统的钉转移任务的计算机化版本。我们使用累积求和 (CUSUM) 方法评估了 VBLaST-PT© 学员的学习曲线，并将其与 FLS 进行比较，以确定 VBLaST-PT© 的收敛效度。方法将 18 名医学生随机分配到三组中的一组：对照组、VBLaST 训练和 FLS 训练。 VBLaST 和 FLS 小组在为期 3 周、每周 5 天的时间内总共进行了 150 次挂钩转移任务试验。他们的 CUSUM 分数是根据预定义的表现标准（初级、中级和高级）计算的。 结果 在 VBLaST 训练组的 6 名受试者中，5 名至少达到“初级”水平，3 名达到“中级”水平，1 名在 150 次试验结束时达到“高级”表现标准。相比之下，FLS组在第150次试验中，三名学生达到了“高级”标准，所有六名学生都达到了“中级”和“初级”标准。 VBLaST-PT© 和 FLS 系统均显示出显着的技能改进和保留，尽管通过保留测试中的学习迁移来衡量系统特异性：VBLaST 训练组在 VBLaST-PT© 上的表现优于 FLS（p = 0.003），而 FLS 训练组在 FLS 上的表现优于 VBLaST-PT©（p = 0.002）。结论我们对学习进行了表征VBLaST-PT© 上虚拟钉转移任务的曲线，并使用 CUSUM 分析将其与 FLS 进行比较。两个训练组的受试者都表现出技能表现的显着提高，但系统之间的训练转移并不显着。
BackgroundMastering laparoscopic surgical skills requires considerable time and effort. The Virtual Basic Laparoscopic Skill Trainer (VBLaST-PT©) is being developed as a computerized version of the peg transfer task of the Fundamentals of Laparoscopic Surgery (FLS) system using virtual reality technology. We assessed the learning curve of trainees on the VBLaST-PT© using the cumulative summation (CUSUM) method and compared them with those on the FLS to establish convergent validity for the VBLaST-PT©.MethodsEighteen medical students from were assigned randomly to one of three groups: control, VBLaST-training, and FLS-training. The VBLaST and the FLS groups performed a total of 150 trials of the peg-transfer task over a 3-week period, 5 days a week. Their CUSUM scores were computed based on predefined performance criteria (junior, intermediate, and senior levels).ResultsOf the six subjects in the VBLaST-training group, five achieved at least the “junior” level, three achieved the “intermediate” level, and one achieved the “senior” level of performance criterion by the end of the 150 trials. In comparison, for the FLS group, three students achieved the “senior” criterion and all six students achieved the “intermediate” and “junior” criteria by the 150th trials. Both the VBLaST-PT© and the FLS systems showed significant skill improvement and retention, albeit with system specificity as measured by transfer of learning in the retention test: The VBLaST-trained group performed better on the VBLaST-PT© than on FLS (p = 0.003), whereas the FLS-trained group performed better on the FLS than on VBLaST-PT© (p = 0.002).ConclusionsWe characterized the learning curve for a virtual peg transfer task on the VBLaST-PT© and compared it with the FLS using CUSUM analysis. Subjects in both training groups showed significant improvement in skill performance, but the transfer of training between systems was not significant.
虚拟现实技术和力反馈为手术训练模拟器带来的附加值。
DOI：
10.3233/wor-2012-0453-2288
发表时间：
2012
期刊：
Work (Reading, Mass.)
影响因子：
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作者：
Zhang,L;Grosdemouge,C;Arikatla,VS;Ahn,W;Sankaranarayanan,G;De,S;Jones,D;Schwaitzberg,S;Cao,CGL
通讯作者：
Cao,CGL