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. 2023 Feb 15;9:e42250. doi: 10.2196/42250

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©Seyed Mohammad Ayyoubzadeh, Tayebeh Baniasadi, Mohammad Shirkhoda, Sharareh Rostam Niakan Kalhori, Niloofar Mohammadzadeh, Kamran Roudini, Reza Ghalehtaki, Fereidoon Memari, Amirmohsen Jalaeefar. Originally published in JMIR Cancer (https://cancer.jmir.org), 15.02.2023.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Cancer, is properly cited. The complete bibliographic information, a link to the original publication on https://cancer.jmir.org/, as well as this copyright and license information must be included.

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Photoplethysmography (PPG) signal retrieved from the MAX30101 PPG sensor. (A) Raw PPG signal from the wrist. (B) PPG signal after applying a filter.