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. 2022 Oct 11;2:128. doi: 10.1038/s43856-022-00194-5

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — n = 407 study participants, blind sweeps performed by expert sonographers. a Blind-sweep procedure and standard fetal biometry procedure absolute error versus ground truth gestational age (4-week windows). Box indicates 25th, 50th, and 75th percentile absolute error, and whiskers indicate 5th and 95th percentile absolute error. b Error distributions for blind-sweep procedure and standard fetal biometry procedure. c Paired errors for a blind sweep and standard fetal biometry estimates in the same study visit. The errors of the two methods exhibit correlation, but the worst-case errors for the blind-sweep procedure have a lower magnitude than the standard fetal biometry method. d Video sequence feedback-score calibration on the test sets. The realized model estimation error on held-out video sequences decreases as the model’s feedback score increases. A thresholded feedback score may be used as a user feedback signal to redo low-quality blind sweeps. Box indicates 25th, 50th, and 75th percentile of absolute errors, and whiskers indicate the 5th and 95th percentile absolute error.