Objective: To validate an ocular phantom as a realistic educational tool utilizing and phantom optic nerve sheath (ONS) images obtained by ultrasound.
Methods: This prospective study enrolled 51 resident physicians from the Denver Health Residency in Emergency Medicine (EM) and 10 ultrasound fellowship-trained EM attending physicians. Participants performed optic nerve sheath diameter (ONSD) measurements on five and five phantom ocular ultrasound images and rated the realism of each image on a 5-point Likert scale. Chi-square analysis was performed to evaluate the subjective "realness" of and phantom images.
Results: Sixty-one participants performed ONSD measurements. Mean Likert scale values were 3.43 (95% confidence interval: 3.31-3.55) for images and 3.41 (95% confidence interval: 3.28-3.54) for phantom images. There was no statistical difference in subjective "realness" between and phantom ONSD ultrasound images among EM residents. Ultrasound fellowship-trained EM attending physicians aptly differentiated between ( < 0.01) and phantom ( < 0.01) images, as compared with EM residents.
Conclusion: Our ocular phantom simulates posterior ocular anatomy. EM resident physicians found the phantom indistinguishable from images. Our ONS model provides an inexpensive and realistic educational tool to teach bedside ONSD sonography.
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| http://dx.doi.org/10.1016/j.jmu.2017.01.003 | DOI Listing |
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