A Study on Hemodynamic Relationship Including Cerebral Blood Flow Using Phase Contrast and Signal Intensity Gradient of Brain Magnetic Resonance Imaging, and Carotid Doppler Ultrasound

Inclusion Criteria

• •1. Patients 18 years of age or older who have been admitted to the neurology department due to a stroke, and those who have already performed brain magnetic resonance imaging
• •2. Among the patients (1) who underwent carotid artery Doppler ultrasound
• •3. Patients who fully understand the research objectives and procedures and wish to participate in clinical research voluntarily
• •4. If a patient is not fully understood due to a decrease in awareness or consciousness, the consent of the legal representative is required