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Diagnostic ultrasound ( PDFDrive )

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1808 PART V Pediatric Sonography

A B C

FIG. 52.47 Arterial Thrombosis in a 15-Year-Old Boy 1 Day After Kidney Transplantation. (A) Longitudinal sonogram of renal allograft

shows a swollen kidney with poor corticomedullary differentiation (arrows). (B) Color Doppler imaging reveals minimal intrarenal low. (C) Spectral

Doppler analysis of the main renal artery in the hilum of the kidney depicts systolic spikes with no appreciable diastolic low.

A

B

C

FIG. 52.48 Segmental Infarction of Renal Allograft 5 Years After Transplantation. (A) Longitudinal gray-scale image demonstrates a

hypoechoic, triangular zone in the renal cortex (arrows). (B) Color Doppler image shows displacement of vessels around this zone. (C) Contrastenhanced

ultrasound reveals focal absence of perfusion in keeping with infarction (reference gray-scale image in left panel). (Courtesy of Dr. Ákos

Járay, University of Pécs, Hungary.)

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