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Establishing validity evidence for the use of VIMEDIX-AR automated metrics in assessment of FAST exam skillsWard, Mellissa January 2021 (has links)
Introduction: Simulation has an increasing role in medical education. It offers the ability to learn and practice in a safe environment. Ultrasound is a key tool for many clinicians; however, it requires significant experience to gain expertise. The most common method to gain experience is by training courses with volunteers, where experts are present for one-on-one teaching. This is time and labour intensive. Commercial ultrasound simulators are increasingly available with software capable of generating automated metrics. We sought validity evidence to support the use of automated metrics as a tool for assessment of learners completing a Focused Assessment with Sonography in Trauma (FAST) exam.
Methods: Three groups with differing expertise were recruited to participate: novices with no ultrasound training, intermediates who had completed a formal course within six months, and experts with at least five years of clinical experience. All participants were recorded while completing a FAST exam. Automated metrics of time, path length, angular movement, and percent area viewed were obtained. This video was then scored using the Quality of Ultrasound Imaging and Competence (QUICk) by two expert assessors. Participants were also asked to complete ten find fluid exercises, where automated metrics were generated. Automated metrics from the recorded FAST and QUICk were compared using Kruskall-Wallis to assess for differences in expertise. Correlations between QUICk score and the automated metrics were assessed using Pearson’s correlation coefficient. Find fluid exercises were also assessed using repeated measures one-way ANOVA models.
Results: Time, angular movement, and percent area viewed left upper quadrant (LUQ) were significantly different with novices requiring more time and angular movement, and higher percent area viewed LUQ than experts. The QUICk scores were significantly higher for the experts and intermediates compared to the novices. The scores from the QUICk overall and checklist did not correlate with any automated metrics. Individual components of positioning and handling, probe handling, and image scrolling were negatively correlated with percent area viewed LUQ. Overall, the QUICk tool could differentiate novices from both intermediates and experts when using the VIMEDIX-AR simulator. Several automated metrics could differentiate expertise. Further work should develop a composite score of automated metrics to assess learners. / Thesis / Master of Science (MSc) / Simulation has become ubiquitous in medical education, offering a safe environment to learn and practice new skills. With the increasing availability of point of care ultrasound and the need for significant training to generate and interpret images, simulation is becoming ever more important. We sought to assess an expert assessment tool for use with an ultrasound simulator and to validate automated metrics associated with the VIMEDIX-AR simulator. The expert assessment tool could reliably differentiate different expertise levels. Three of our automated metrics could discern different levels of expertise. Further work is needed to assess if a composite score of automated metrics could better differentiate skill.
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Making babies: Routine ultrasound imaging and the cultural construction of the fetus in Montreal, CanadaMitchell, Lisa Meryn January 1993 (has links)
No description available.
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STUDY OF SINGLE CELL SONOPORATION IN REAL TIME USING ELECTROPHYSIOLOGY TECHNIQUESZhou, Yun 03 April 2008 (has links)
No description available.
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ULTRASONIC NORMATIVE SWALLOWING DATA IN THREE/FOUR YEAR OLD CHILDRENZeidler, Stephanie J. 20 April 2007 (has links)
No description available.
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Effects of Ultrasound on Ethanol Fermentation by Saccharomyces cerevisiaeHuezo, Luis A. 21 September 2017 (has links)
No description available.
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Impact of Ultrasonography on use of Biologics in Patients with Rheumatoid ArthritisAtzinger, Christopher B. 22 May 2018 (has links)
No description available.
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Ultrasound-Induced Hyperthermia in <i>Ex Vivo</i>Clotted Blood and Cranial BoneNahirnyak, Volodymyr M. 02 October 2006 (has links)
No description available.
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The influence of ambient light on the detectability of low-contrast lesions in simulated ultrasound imagesSankaran, Sharlini January 1999 (has links)
No description available.
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Generation of simulated ultrasound images using a Gaussian smoothing functionLi, Jian-Cheng January 1995 (has links)
No description available.
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Ultrasonic cleaning of latex particle fouled membranesLamminen, Mikko O. 06 January 2005 (has links)
No description available.
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