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Deep learning-based classification of diffusion-weighted imaging-fluid-attenuated inversion recovery mismatch.

Pum Jun Kim1, Dongyoung Kim1, Joonwon Lee2

  • 1Graduate School of Artificial Intelligence, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea.

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|February 18, 2025
PubMed
Summary
This summary is machine-generated.

A deep learning model accurately identifies diffusion-weighted imaging (DWI) and fluid-attenuated inversion recovery (FLAIR) mismatch in acute stroke patients. This AI tool reduces subjectivity in assessing mismatch, aiding treatment decisions for recanalization therapy.

Keywords:
Cerebral infarctionDeep learningDiffusion-FLAIR mismatchIschemic strokeMachine learning

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Area of Science:

  • Medical Imaging and Diagnostics
  • Artificial Intelligence in Medicine
  • Neurology and Stroke Management

Background:

  • Diffusion-weighted imaging (DWI)-fluid-attenuated inversion recovery (FLAIR) mismatch is crucial for identifying acute ischemic stroke patients eligible for recanalization treatment.
  • Visual assessment of DWI-FLAIR mismatch suffers from inter-rater variability, impacting diagnostic accuracy and treatment consistency.
  • Objective and automated methods are needed to overcome the limitations of subjective visual assessment in stroke imaging.

Purpose of the Study:

  • To develop and validate a deep learning-based classifier for automated DWI-FLAIR mismatch categorization in acute ischemic stroke.
  • To improve the objectivity and consistency of DWI-FLAIR mismatch assessment for better patient selection in recanalization therapy.

Main Methods:

  • Convolutional Neural Network (CNN) models were developed for two binary classifications: DWI-FLAIR match vs. non-match and match vs. mismatch.
  • Data from 2369 patients (derivation cohort) and 679 patients (external validation cohorts) across four stroke centers were utilized.
  • Model performance was evaluated using Area Under the Curve (AUC) for internal and external validation sets.

Main Results:

  • The classifier for DWI-FLAIR match vs. non-match achieved an internal AUC of 0.862 and external AUCs of 0.829 and 0.835.
  • The classifier for DWI-FLAIR match vs. mismatch demonstrated higher performance with an internal AUC of 0.934 and external AUCs of 0.883 and 0.913.
  • The deep learning approach significantly reduced subjectivity in DWI-FLAIR mismatch assessment.

Conclusions:

  • A deep learning-based classifier can accurately and reliably categorize DWI-FLAIR mismatch in acute ischemic stroke patients.
  • This AI tool has the potential to diminish subjectivity and support targeted clinical decision-making for recanalization treatments.
  • Automated DWI-FLAIR mismatch assessment using deep learning can enhance the efficiency and effectiveness of acute stroke care.