T 2-and proton density weighted images often showed high-signaling of pontine transversal fibers ( 19/ 28) and middle cerebellar peduncles ( 12/ 28). 在T2和质子密度加权像上常可见桥横纤维(19/28)和小脑中脚(12/28)高信号。
Their main distributions were transverse fibers of the basis pontine, the white matter of the cerebellum, striatopallidal fibers and lateral column of the spinal cord. 主要分布于脑桥、小脑、苍白球壳核、延髓白质纤维束,脊髓外侧束,且与髓鞘变性脱失的分布一致。
Results MR appearances of CPM were as followed:( 1) The location of CPM was in the center of the pons. Transverse pontine fibers were most severely affected with sparing of descending corticospinal tracts. 结果CPM的MRI特征表现为:(1)病变位于脑桥中央部位,主要累及桥横纤维的髓鞘,皮质脊髓束的轴索保持完好;