Abstract
SUMMARY: Artificial intelligence technology is a rapidly expanding field with many applications in acute stroke imaging, including ischemic and hemorrhage subtypes. Early identification of acute stroke is critical for initiating prompt intervention to reduce morbidity and mortality. Artificial intelligence can help with various aspects of the stroke treatment paradigm, including infarct or hemorrhage detection, segmentation, classification, large vessel occlusion detection, Alberta Stroke Program Early CT Score grading, and prognostication. In particular, emerging artificial intelligence techniques such as convolutional neural networks show promise in performing these imaging-based tasks efficiently and accurately. The purpose of this review is twofold: first, to describe AI methods and available public and commercial platforms in stroke imaging, and second, to summarize the literature of current artificial intelligence–driven applications for acute stroke triage, surveillance, and prediction.
ABBREVIATIONS:
- AI
- artificial intelligence
- ANN
- artificial neural network
- AUC
- area under the curve
- CNN
- convolutional neural network
- DL
- deep learning
- ICC
- intraclass correlation coefficient
- ICH
- intracranial hemorrhage
- LVO
- large vessel occlusion
- ML
- machine learning
- MRP
- MR perfusion
- RF
- random forest
- SVM
- support vector machine
Footnotes
Disclosures: Daniel Chow—RELATED: Grant: Avicenna.ai*; UNRELATED: Consultancy: Canon Medical; Expert Testimony: Cullins & Grandy; Grants/Grants Pending: Canon Medical, Novocure; Stock/Stock Options: Avicenna.ai. Christopher Filippi—UNRELATED: Consultancy: Guerbet, Syntactx, Comments: Advisor on AI (Guerbet) and interpret brain MR for clinical trials (Syntactx); Grants/Grants Pending: FASNR grant and National MS Society grant; Stock/Stock Options: Minority stakeholder in start-up Avicenna. Wengui Yu—UNRELATED: Employment: University of California Irvine. Peter Chang—UNRELATED: Consultancy: Canon Medical, Comments: Consulting, travel expenses, honorarium for invited keynote speaker (RSNA); Stock/Stock Options: Avicenna.ai, Comments: Co-founder, board member. *Money paid to institution.
- © 2021 by American Journal of Neuroradiology
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