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Diagnostic ultrasound ( PDFDrive )

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1616 PART V Pediatric Sonography

A

B

C

D

FIG. 47.21 Asphyxia. (A) One-year-old child after a respiratory arrest demonstrates mild cerebral edema on CT scan. (B) However, the RI in

the left PCA is abnormally low, measuring 0.43, consistent with loss of autoregulation (normal range is 0.5-0.6). (C) CT scan 2 days later shows

severe cerebral edema. (D) CT scan 1 month later shows marked atrophy.

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