Variation of perisylvian and calcarine anatomic landmarks within stereotaxic proportional coordinates.
Variation of perisylvian and calcarine anatomic landmarks within stereotaxic proportional coordinates.
复制标题
立体定位比例坐标内侧裂和距状解剖标志的变化。
DOI：
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
H. Freund
中科院分区：
文献类型：
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作者：
H. Steinmetz;G. Fürst;H. Freund
这项调查描述了功能上重要的persylvian标志和Talairach立体定位网格内的距状沟的位置的变化，该系统经常用于功能图像中的皮质定位。20名健康志愿者（40个半球）在立体定位条件下进行MR成像。在矢状面5 mm MR切片上直接识别以下结构的轮廓，并在单独的比例网格覆盖图上标记：下中央沟、下中央前沟、下中央后沟、外侧裂前升支和后支、上级颞沟和距状沟。这些标志的最大变化区通过将标准化个体数据叠加在标准立体定位网格上来定义。脑沟变异带长1.5- 2.0cm。研究结果表明，在大脑表面的宏观解剖的个性不能占比例坐标充分，这种方法不允许精确定义的解剖为基础的功能成像感兴趣的区域。相反，应该使用单个脑沟模式的MR映射来生成大脑模板。
This investigation describes the variability in location of functionally important persylvian landmarks and of the calcarine sulcus within the Talairach stereotaxic grid, a system frequently used for cortical localization in functional images. Twenty healthy volunteers (40 hemispheres) had MR imaging under stereotaxic conditions. Outlines of the following structures were directly identified on sagittal 5-mm MR sections and marked on individual proportional grid overlays: inferior central sulcus, inferior precentral sulcus, inferior postcentral sulcus, anterior ascending ramus and posterior rami of the sylvian fissure, superior temporal sulcus, and calcarine sulcus. Maximal variation zones for these landmarks were defined by superimposition of the standardized individual data on a standard stereotaxic grid. The sulcal variation zones measured 1.5-2.0 cm. The findings indicate that macroanatomic individuality in the cerebral surface cannot be accounted for adequately by proportional coordinates, and that this method does not allow precise definition of anatomically based regions of interest for functional imaging. Instead, MR mapping of the individual sulcus pattern should be used to generate brain templates.
影响因子：
1.3
作者：
BAJCSY, R;LIEBERSON, R;REIVICH, M
通讯作者：
REIVICH, M
影响因子：
56.9
作者：
POSNER, MI;PETERSEN, SE;RAICHLE, ME
通讯作者：
RAICHLE, ME