Rumeau C, Faure J, Bonjour P, Salamon G
Service de Neuroradiologie, CHU La Timone, Marseille.
Ann Radiol (Paris). 1990;33(1):13-21.
The presence of flexures between the mesencephalon, pons and medulla oblongata implies the definition of specific orientations of axial sections for each level of the brain stem. These axial sections have to be perpendicular to the axis of the corresponding segment. For the mesencephalon, we have defined an axis corresponding to a straight line of best fit to the mesencephalic anatomical axis; the whole of the rhombencephalon has been referred to an axis taken through the pons and the intracranial medulla that is tangential to the floor of the IV ventricle. Identical reference planes can be obtained in CT by programming, on the scout view of the skull, perpendicular sections of the clivus that allow the study of the axial aspect of the mesencephalon, with sections at - 7 degrees through Chamberlain's line for visualization of the same aspect of the rhombencephalon. We have thus defined the referential planes to analyse every level of the brain stem using reproducible axial sections, able to be applied to different patients as well as to different examining techniques (TDM, MRI).
中脑、脑桥和延髓之间存在弯曲，这意味着要为脑干的每个层面定义轴向切片的特定方向。这些轴向切片必须垂直于相应节段的轴。对于中脑，我们定义了一条与中脑解剖轴最佳拟合直线相对应的轴；整个后脑则参考一条穿过脑桥和颅内延髓且与第四脑室底部相切的轴。通过在颅骨的定位视图上编程，可在CT中获得相同的参考平面，即通过斜坡的垂直切片，用于研究中脑的轴向层面，通过钱伯林线处以 - 7度的切片来观察后脑的同一层面。因此，我们定义了参考平面，以便使用可重复的轴向切片来分析脑干的每个层面，这些切片能够应用于不同患者以及不同的检查技术（TDM、MRI）。
