1. School of Medical Information Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
2. Department of Neurology, Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
3. Department of Ultrasound, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, Jinan, 250021 Shandong, China
4. Department of Neurology, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, Jinan, 250021 Shandong, China