Face and construct validation of a virtual peg transfer simulator.
Face and construct validation of a virtual peg transfer simulator.
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DOI：
10.1007/s00464-012-2664-y
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发表时间：
2013-05
影响因子：
3.1
通讯作者：
Jones, Daniel B.
中科院分区：
文献类型：
--
作者：
Arikatla, Venkata S.;Sankaranarayanan, Ganesh;Ahn, Woojin;Chellali, Amine;De, Suvranu;Caroline, G. L.;Hwabejire, John;DeMoya, Marc;Schwaitzberg, Steven;Jones, Daniel B.
The Fundamentals of Laparascopic Surgery (FLS) trainer box is now established as a standard for evaluating minimally invasive surgical skills. A particularly simple task in this trainer box is the peg transfer task which is aimed at testing the surgeon’s bimanual dexterity, hand-eye coordination, speed and precision. The Virtual Basic Laparoscopic Skill Trainer (VBLaST©) is a virtual version of the FLS tasks which allows automatic scoring and real time, subjective quantification of performance without the need of a human proctor. In this paper we report validation studies of the VBLaST© peg transfer (VBLaST-PT©) simulator. Thirty-five subjects with medical background were divided into two groups: experts (PGY 4-5, fellows and practicing surgeons) and novices (PGY 1-3). The subjects were asked to perform the peg transfer task on both the FLS trainer box and the VBLaST-PT© simulator and their performance was evaluated based on established metrics of error and time. A new length of trajectory (LOT) metric has also been introduced for offline analysis. A questionnaire was used to rate the realism of the virtual system on a 5-point Likert scale. Preliminary face validation of the VBLaST-PT© with 34 subjects rated on a 5-point Likert scale questionnaire revealed high scores for all aspects of simulation, with 3.53 being the lowest mean score across all questions. A two-tailed Mann-Whitney performed on the total scores showed significant (p=0.001) difference between the groups. A similar test performed on the task time (p=0.002) and the length of trajectory (p=0.004) separately showed statistically significant differences between the experts and novice groups (p<0.05). The experts appear to be traversing shorter overall trajectories in less time than the novices. VBLaST-PT© showed both face and construct validity and has promise as a substitute for the FLS to training peg transfer skills.
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DOI：
10.1007/s00464-007-9625-x
发表时间：
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影响因子：
3.1
作者：
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通讯作者：
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