Accuracy of Optic Nerve Sheath Diameter Measurements in Pocket-Sized Ultrasound Devices in a Simulation Model.
| Autor: | Johnson GGRJ; Department of Surgery, University of Manitoba, Winnipeg, MB, Canada., Jelic T; Department of Emergency Medicine, University of Manitoba, Winnipeg, MB, Canada., Derksen A; Emergency Department, Seven Oaks General Hospital, Winnipeg, MB, Canada., Unger B; Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada., Zeiler FA; Section of Neurosurgery, Department of Surgery, University of Manitoba, Winnipeg, MB, Canada.; Department of Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada.; Biomedical Engineering, Faculty of Engineering, University of Manitoba, Winnipeg, MB, Canada.; Centre on Aging, University of Manitoba, Winnipeg, MB, Canada.; Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, United Kingdom., Ziesmann MT; Department of Surgery, University of Manitoba, Winnipeg, MB, Canada., Gillman LM; Department of Surgery, University of Manitoba, Winnipeg, MB, Canada. |
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| Jazyk: | angličtina |
| Zdroj: | Frontiers in medicine [Front Med (Lausanne)] 2022 Mar 02; Vol. 9, pp. 831778. Date of Electronic Publication: 2022 Mar 02 (Print Publication: 2022). |
| DOI: | 10.3389/fmed.2022.831778 |
| Abstrakt: | Introduction: Transorbital sonographic measurement of optic nerve sheath diameter (ONSD) is an emerging non-invasive technique for the identification and monitoring of intracranial hypertension. In recent years, new pocket ultrasound devices have become available, and it is uncertain if they have the resolution to measure such small structures appropriately as compared to their predecessors. In this study, we measure the performance of three ultrasound units on a simulation model to establish their precision and accuracy. Methods: ONSD was measured by three expert point-of-care sonographers using ultrasound machines three times on each of seven discrete ONS model sizes ranging from 3.5 to 7.9 mm. Two pocket ultrasounds (IVIZ, Sonosite, and Lumify, Philips) and one standard-sized portable ultrasound (M-Turbo, Sonosite) were used. Measurements were analyzed for mean error and variance and tested for significance using blocked covariance matrix regression analyses. Results: The devices differed in their variances (Lumify: 0.19 mm 2 , M-Turbo: 0.26 mm 2 , IVIZ: 0.34 mm 2 ) and their mean error (Lumify: -0.05 mm, M-Turbo: 0.10 mm, IVIZ: -0.10 mm). The difference in mean error between users is not significant ( p = 0.45), but there is a significant difference in mean error between devices ( p = 0.02). Conclusions: Accurate ONSD measurement is possible utilizing pocket-sized ultrasound, and in some cases, may be more accurate than larger portable ultrasound units. While the differences in these devices were statistically significant, all three were highly accurate, with one pocket device (Lumify) outperforming the rest. Further study in human subjects should be conducted prior to using pocket ultrasound devices for in vivo diagnosis of intracranial hypertension. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2022 Johnson, Jelic, Derksen, Unger, Zeiler, Ziesmann and Gillman.) |
| Databáze: | MEDLINE |
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