思想的星空——人教版语文九年级上册第二单元拓展阅读：你自己决定吧！

Doppler surveillance is important for detecting ISR after CAS procedures. Severe ISR (>70%) should be retreated in most cases as ISR may progress to occlusion. Asymptomatic patients with moderate ISR (50-69%) at 6 months can be safely followed conservatively. Progression of ISR after 6-12 months is ... View More