&ref(early 5.jpg) 高吸収像を示す中大脳動脈 Hyperdense MCA sign (HMCAS) &ref(early 3.jpg) 島皮質の不鮮明化(Insular ribbonの消失) &ref(early CT5.jpg) diffusion weighted MRI 脳梗塞急性期のCT所見