Extraction of Radiological Characteristics From Free-Text Imaging Reports Using Natural Language Processing Among Patients With Ischemic and Hemorrhagic Stroke: Algorithm Development and Validation

Enshuo Hsu   ^{1, 2} , BSc, MA ;   Abdulaziz T Bako   ¹ , MBBS, MPH, PhD ;   Thomas Potter   ¹ , BSc, MSc, PhD ;   Alan P Pan   ¹ , BSc, MSc ;   Gavin W Britz   ^{3, 4} , MBBCHIR, MPH, MBA ;   Jonika Tannous   ¹ , BA, PhD ;   Farhaan S Vahidy   ^{1, 3, 5} , MBBS, MPH, PhD

¹ Center for Health Data Science and Analytics, Houston Methodist Research Institute, Houston, TX, United States

² School of Biomedical Informatics, University of Texas Health Science Center at Houston, Houston, TX, United States

³ Department of Neurosurgery, Houston Methodist Neurological Institute, Houston, TX, United States

⁴ Department of Neurology, Weill Cornell Medical College, New York, NY, United States

⁵ Department of Population Health Sciences, Weill Cornell Medical College, New York, NY, United States