Objective 1 To evaluate the character of color Doppler and frequency spectrum Doppler of cerebral artery stenosis by examining the patients who were suspected with cerebrovascular disease with TCCS.

• 目的1对怀疑有脑血管疾病的患者进行经颅彩色多普勒超声(TCCS)检查,探讨颅内动脉狭窄的彩色多普勒及频谱多普勒特征。