Abstract
In our original published article, we labeled the x-axis in Fig. 1(b) incorrectly [Biomed. Opt. Express 11, 1462 (2020) [CrossRef] ]. The sub-figure reports the importance of features extracted from the waveforms in training a machine learning algorithm to estimate intracranial pressure. This erratum corrects the labels in Fig. 1(b). The discussion and conclusions drawn from this article did not change.
© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Results
Figure 1(b) [1] shows the importance of waveform features used in the machine learning algorithm. In the original article, the features in Fig. 1(b) were incorrectly labeled. This was due to an error in the label assignment inside the MATLAB script used to create this graph. After correcting this mistake, these features are now predominantly originating from the percussion wave (P1). The most important features, labeled MAP and AUC, for mean arterial pressure and area under the curve, are unaffected. The figure caption is also not affected.
This graphical mistake has no impact on the methods described in the original article nor does it impact the performance of the described algorithm in estimating intracranial pressure non-invasively from cardiac pulsations in blood flow measured from the brain with diffuse correlation spectroscopy.
Funding
Center for Machine Learning and Health at Carnegie Mellon University; American Heart Association (17SDG33700047); National Institutes of Health (R21-EB024675).
Disclosures
The authors declare that there are no conflicts of interest related to this article.
References
1. A. Ruesch, J. Yang, S. Schmitt, D. Acharya, M. A. Smith, and J. M. Kainerstorfer, “Estimating intracranial pressure using pulsatile cerebral blood flow measured with diffuse correlation spectroscopy,” Biomed. Opt. Express 11(3), 1462 (2020). [CrossRef]