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. 2020 May 30:opaa168. doi: 10.1093/ons/opaa168

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Copyright © 2020 by the Congress of Neurological Surgeons

This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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FIGURE 7. — Representative images demonstrating the original cropped image A and image following brightness and contrast adjustment B and thresholding C with visible, accentuated droplets in both images C. D, Analysis of particles with quantification of droplets.