大脑中央前沟MRI解剖学研究及其临床意义  

Anatomic study of cerebral precentral sulcus by magnetic resonance imaging and its clinical significance

作　　者：张顺花[1,2] 王震寰[2] 张俊祥[1,3] 沈龙山[2,4] 张磊[2,5] 张艳 刘志军[3] 

机构地区：[1]蚌埠医学院医学影像学系,安徽蚌埠233030 [2]蚌埠医学院临床应用解剖研究所,安徽蚌埠233030 [3]蚌埠医学院第一附属医院MRI室,安徽蚌埠233004 [4]蚌埠医学院第二附属医院放射科,安徽蚌埠233040 [5]安徽省阜阳市人民医院放射科,236003

出　　处：《蚌埠医学院学报》2010年第4期325-329,共5页Journal of Bengbu Medical College

基　　金：安徽省跨世纪学术和技术带头人后备人选科研资助项目(2002HBL26)

摘　　要：目的:探讨中央前沟在MRI横、矢状断面图像上的形态学规律。方法:采集30名正常成人头颅连续MRI数据,应用e-film 2.1工作站和Adobe Photoshop CS 8.0软件包,研究中央前沟在横、矢状断层面上的形态特征规律及其形态学类型。结果:中央前沟主要分为3种类型:一段型,横断面上为一形态欠规则的略曲线型,矢状断面上表现为从后上向前下走行、略呈"S"的单一线形,显示率为16.67%;二段型,由额中回与中央前回之间的连接部分隔所致,横断面显示为前后2条形态各异的短沟,矢状断面上为2条从后上向前下走行的"S"线形,显示率为63.33%;三段型,由中央前回中下部外侧面向前发出的一舌样小回将下中央前沟局部挤压变形所致,横断面为3条呈上下、前后关系的短沟,而矢状断面,下中央前沟则为从后上向前下走行、略似斜纵形的"Ω"形,显示率为20.00%。结论:中央前沟在MRI横、矢状断面图像上的形态学规律可为额叶后部病变的定位诊断以及手术入路的选择提供解剖学依据。Objective：To observe the morphological features of the cerebral precentral sulcus on the axial and sagittal magnetic resonance imaging（MRI）.Methods：The continuous axial and sagittal MRI of 30 healthy adults heads were obtained to identify,localize and classify the cerebral precentral sulcus by using the e-film workstation and Adobe Photoshop CS 8.0 software.Results：There were three typical patterns of the precentral sulcus：the unitary-pattern,dicho-pattern and tri-pattern,and the detection rates were 16.67%,63.33%,and 20.00%,respectively.The unitary-pattern appeared an irregular and curve shape on the axial imaging,and demonstrated a slightly ＂S＂ linear shape from the posterosuperior to the anterioroinferior on the sagittal imaging.The dicho-pattern appeared two different and short sulcus on the axial imaging,and demonstrated two ＂S＂ linear shape from the posterosuperior to the anterioroinferior on the sagittal imaging.The tri-pattern appeared three short sulci on the cross section,and the inferior precentral sulci appeared a slightly oblique longitudinal ＂Ω＂ shape from the posterosuperior to the anterioroinferior on the sagittal imaging.The formation of the dicho-pattern and tri-pattern was the conjunction between the posterior part of the middle frontal gyrus and the anterior part precentral gyrus,as well as a minor gyrus from the middle frontal gyrus,respectively.Conclusions：The morphological features of the cerebral precentral sulcus on the axial and sagittal MRI of brain can provide anatomic evidence for the diagnosis and selection of surgical approaches to the diseases at the posterior part of the frontal lobe.

关 键 词：脑 中央前沟 断层影像解剖 磁共振成像 

分 类 号：R322.81[医药卫生—人体解剖和组织胚胎学]