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Introduction: Periventricular-intraventricular haemorrhage is the most common, well known acute perinatal brain injury in low birth weight infants (LBWI). It is the major cause of death and disability in this group of babies. The other major lesion is periventricular leucomalacia (PVL). The non-invasive technique of cranial ultrasound clarified the diagnosis and assisted in documenting the decline in the 1980's from 34-39%