| Type of Hemorrhage |
Age |
Cause |
Clinical Features |
Imaging Characteristics |
| Subdural Hemorrhage |
Common in full-term infants |
Birth injury |
Mild cases are asymptomatic; severe cases present with agitation and seizures |
CT often shows high-density images in the falx cerebri and tentorium cerebelli |
| Arachnoid Hemorrhage |
Common in premature infants |
Asphyxia |
Mild cases are asymptomatic (mild symptoms); severe cases may present with altered consciousness and seizures |
CT shows high-density images in the subarachnoid space, brain sulci, fissures, and cisterns |
| Periventricular and Intraventricular Hemorrhage |
Common in preterm infants and extremely low birth weight infants |
Asphyxia |
Mild cases are asymptomatic; severe cases may deteriorate rapidly, presenting with altered consciousness, irregular breathing, and apnea |
Ultrasound shows strong echoes in the ventricles; CT shows high-density images categorized into four grades based on severity |
| Cerebellar Hemorrhage |
Common in premature infants |
Asphyxia |
Severe condition, respiratory distress |
Ultrasound shows irregularly enhanced echoes; |
| Extremely low birth weight infants |
Birth injury |
Rapid deterioration |
CT shows high-density images in the cerebellar parenchyma |
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