Fig. 3
From: Deep learning to identify stroke within 4.5 h using DWI and FLAIR in a prospective multicenter study
Flowchart of the study population in the internal dataset. A flowchart of the study population and process is presented for the internal dataset. This dataset included 610 patients with acute ischemic stroke who had undergone proper diffusion-weighted imaging (DWI) and fluid-attenuated inversion recovery (FLAIR) scans within 24 h of a clearly defined symptom onset. The patients were divided into training (n = 487) and test (n = 123) sets at an 8:2 ratio. DWI, diffusion-weighted imaging; FLAIR, fluid-attenuated inversion recovery.
