Imaging Anatomical Study Of Cerebral Medullary Branches And Gyri By Clock Localization Method On Transverse And Coronal Sectior

Objective: In order to provide reliable morphological basis and new way for imaging study of brain function and the early diagnosis and treatment of small local disease, a new method of gyri localization on CT and MRI films was discussed using; the clock localization method.Material and methods: Choosing 5 normal cadaver heads to scan in Gessgna MR(?)Tesla MRI machine. The scanning base line is perpendicular to CM base line and 6mm slice thickness, then the brain slice was cut in correspondence with MRI scan. Choosing 30 normal cadaver heads to scan in SCT-4800TF CT machine according to CM base ine and 10mm slice thickness, then the brain slice was cut in correspondence with CT scan. The brain was obtained from the scanned cadaver heads, chen painring different water co ors on the major gyri and fasten it with 20% glutin. To cut the brain slice in corr espondence with MRI scan and CT scan with the brain knife on slice frame. Observing the medullary pattern and direction by the comparison of the MRI and CT images with serial sections of the brains, a new method of gyri localization on CT and MF I flms was discussed using the clock localization method.Result: Through our studying, the rules of localizing gyrus through the pattem of medullary branches on the transverse and coronal plane are described as follows.:(1). On cross section, because Sulcus of brain are clear on the CT film of cerebrum coping and cerebral medullary substance does not appear, gyri is Localized by sulcus. On the. middle department of cerebral hemisphere central sulcus is on 3 clock of dial plare, preoentral gyrus is anterior to central sulcus and postcentral gyrvs is posterior tc that. They are all high density. Medullary branch of precentral gyrus is on 1-2 clock of dial plare and postcentrai gyrus is on 2~3 clock of dial plate from this section. On coronal secien. medullary branch of precentral gyrus and postcentrai gyrus are observed or. the head of caudate nucleus lentiform nucleus\ anterior branch of internal capsule plane and...