Hydrocephalus after Subarachnoid Hemorrhage: Pathophysiology, Diagnosis, and Treatment

Figure 5

This picture simulates how to calculate the BCI, namely, the severity of HCP, the ratio. Segment “a” is the distance between caudate nuclei and “” is at the same level the width of brain. The ratio “” of respective group of age, that is, relative bilateral caudate index is also widely accepted among researchers.