Prognostic value of arterial spin-labeling perfusion in anoxic brain injury: A retrospective cohort study

Figure 4 Visual summary of the study population, methodology, and key exploratory findings. A total of 28 patients were included in the analysis. Clinical outcomes of interest included absent brainstem reflexes (BSR), myoclonus status epilepticus (MSE), and absent extensor or motor reflexes. While certain regional arterial spin-labeling (ASL) perfusion patterns-such as left frontal ASL signal with MSE and right frontal ASL signal with BSR-showed relatively higher area under the curve values, these associations did not reach statistical significance and should be interpreted cautiously. Diffusion-weighted imaging demonstrated relatively better predictive performance compared to ASL in this limited cohort. BSR: Brainstem reflexes; MSE: Myoclonus status epilepticus; EMR: Absent extensor or motor reflexes; ASL: Arterial spin-labeling; AUC: Area under the curve; DWI: Diffusion-weighted imaging; MRI: Magnetic resonance imaging.