Stroke is a neurological dysfunction caused by vascular causes. Magnetic resonance imaging (MRI) with modern technology is considered a "golden" tool for screening for stroke. According to Dr. Tran Hoang Ngoc Anh, stroke screening is screening for causes and factors that can easily lead to stroke such as: High blood pressure, diabetes, atherosclerosis, cardiovascular disease, etc.

Recent studies show that many stroke patients during the Covid-19 period, due to fear of the Covid-19 epidemic, did not go to the hospital for emergency treatment in time, causing many stroke patients to lose the opportunity to receive emergency stroke treatment during the "golden hour".