4Saito I, Segawa H, Shiokawa Y, et al. Middle cerebral artery occlu- sion: correlation of computed tomography and angiography with clinical outcome [J]. Stroke, 1987, 18(5): 863-868.
10Honish C, Sadanand V, Fladeland D, et al. The reliability of ultrasound measurements of carotid stenosis compared to MRA and DSA [J]. Can J Neurol Sci, 2005, 32: 465-471.
