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. 2021 May 4;9(5):e24381. doi: 10.2196/24381

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©Amy Y X Yu, Zhongyu A Liu, Chloe Pou-Prom, Kaitlyn Lopes, Moira K Kapral, Richard I Aviv, Muhammad Mamdani. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 04.05.2021.

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 Medical Informatics, is properly cited. The complete bibliographic information, a link to the original publication on https://medinform.jmir.org/, as well as this copyright and license information must be included.

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Example 2 of a discrepancy between the chart abstractor and CHARTextract tool output. (A) Computed tomography angiography scan showing near-occlusion of the cavernous internal carotid artery with reconstitution of the middle cerebral artery. (B) CHARTextract output: the abstractor labeled that large vessel occlusion was absent, but the CHARTextract tool determined this attribute to be present because the words “occlusion” and “M1 segment” were detected in the same sentence.