Conclusion: the precentralsulcus appears on the 1 2 sections that the lenticular nucleus and anterior limb of internal capsule appear but the anterior commissure and dorsal thalamus doesn't appear.
结论：1中央前沟首次出现在豆状核及内囊前肢出现而前连合及背侧丘脑尚未出现的1 ~ 2个断面上。
2
Purpose Significance to study of the central sulcus, precentral and postcentral gyri by MR imaging, to determine its location for application of the clinic.