Periodic neonatal cranial ultrasound diagnosed intraventricular hemorrhage and periventricular leukomalacia, and cerebral palsy in survivors was diagnosed at age 18 months.

• 用周期性的新生儿头颅超声诊断脑室内出血和脑室周围白质软化，及在出生后18月诊断是否有大脑性瘫痪。