The trochlearnerve could be divided into three types in the section of CS: cross-over, convex and straight.
滑车神经在海绵窦分三型，即交叉型、凸型和直型。
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Objective: To obtain the normal image and sectional anatomical data of the oculomotor nerve, the trochlearnerve and the trigeminal nerve through the comparative study between MRI and plastination.