Long T 1 and T 2 signal intensity was showed on MR in central pontine,focus presented under cortex cerebri and in nucleus basalis area in 4 cases. 3 cases enhanced around focus,2 cases enhanced in center and 4 cases no enhanced on postcontrast MRI.

• MRI均表现桥脑中央长T1 及长T2 信号 ,4例伴有皮层下白质及基底节病灶 ,3例病灶周边强化 ,2例病灶中央显著强化 ,4例不强化。