Fig. 4
a Magnetic resonance imaging (MRI; fast imaging employing steady state acquisition, FIESTA), performed 1 month after the surgery, shows significant shrinkage of each ventricle. b MRI (T1-weighted image), performed 1 year after the initial endoscopic third ventriculostomy (ETV), indicating recurrent hydrocephalus. c MRI (FIESTA), performed 6 months after the second ETV, indicating improvement of the hydrocephalus