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首页> 外文期刊>The Canadian Journal of Neurological Sciences: le Journal Canadien des Sciences Neurologiques >A Unique Model for ONSD Part II: Inter/Intra-operator Variability
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A Unique Model for ONSD Part II: Inter/Intra-operator Variability

机译：ONSD第二部分的独特模型：运营商之间/运营商内部的差异

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Objective: To evauluate our novel ultrasound model for measurement of optic nerve sheath diameter (ONSD) and determine the intra- and inter-operator variability associated with this technique. Methods: We conducted ten measurements of ONSD per model amongst eight different models with a single experienced operator to examine intra-operator variability. Similarly, we had seven different operators measure the OSND twice in eight different models, in order to determine inter-operator variability analyzed with a three level linear statistical model. Results: For intro-operator variability, the intra-cluster correlation coefficients for the experienced and novice operators were 0.643 and 0.453 respectively. This displayed improvement in intra-operator variability with experience. The inter-cluster correlation coefficient was 0 for the group of novice operators, indicating negligible difference amongst multiple operators in measuring any given model of ONSD. A strong, statistically significant, linear relationship between the actual model disc size and the ultrasound ONSD measures was identified, implying the reliability of the images produced by our novel model. Conclusions: Utilizing a novel model for ONSD ultrasonoeraphy, we have determined the intraoperator reliability of ONSD measurement to be moderate, with no appreciable difference amongst multiple operators. Improvement in measurement reliability has been demonstrated between expert and novice operators with our model, indicating the potential benefit of simulation platforms for teaching the technique of ONSD ultrasound.
机译：目的：评估用于测量视神经鞘管直径（ONSD）的新型超声模型，并确定与该技术相关的术中和术中变异性。方法：我们在8个不同的模型中，由一位经验丰富的操作员对每个模型进行了10次ONSD测量，以检查操作员内部变异性。同样，我们有七个不同的运算符在八个不同的模型中两次测量OSND，以便确定使用三级线性统计模型分析的运算符间差异。结果：对于操作员内变异性，有经验的操作员和新手操作员的集群内相关系数分别为0.643和0.453。这表明操作者内部的可变性随经验而有所改善。一组新手算子的集群间相关系数为0，表明在测量任何给定的ONSD模型时，多个算子之间的差异可忽略不计。确定了实际模型盘大小与超声ONSD测量值之间的牢固的，统计学上显着的线性关系，这暗示了我们新颖模型产生的图像的可靠性。结论：通过使用新型的ONSD超声图像模型，我们确定ONSD测量的术中操作者可靠性中等，在多个操作者之间没有明显差异。我们的模型已经证明了专家和新手操作者之间测量可靠性的提高，表明了仿真平台对ONSD超声技术的教学的潜在优势。

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