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CHAPTER 45 Neonatal and Infant Brain Imaging 1549

A B C

D

E

FIG. 45.45 Intraparenchymal Hemorrhage (IPH): Periventricular Hemorrhagic Infarction (PVI) and Later Periventricular Leukomalacia

(PVL). (A) Coronal sonogram of 3-day-old infant shows IPH in the right parietal lobe. (B) At 12 days old. IPH is becoming sonolucent centrally. (C)

At 19 days old. IPH has echogenic rind around lucent center. (D) At 1 month old. (E) At 2 months old, extensive PVL white matter damage is

visible bilaterally.

A B C

FIG. 45.46 Cerebellar Hemorrhage. (A) Axial sonogram of the cerebellum shows small acute echogenic cerebellar hemispheric hemorrhage

on the periphery (arrows). (B) Same patient. Chronic sonolucent cerebellar hemorrhage (arrows). Normal pattern of alternating hypoechoic and

hyperechoic linear cerebellar folia and issures (arrowheads) seen through the mastoid fontanelle. (C) Bilateral severe cerebellar hemorrhage

(arrows), and IVH in fourth ventricle (4).

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