Imaging Features of Gray-Scale and Contrast-Enhanced Color Doppler US for the Differentiation of Transient Renal Arterial Ischemia and Arterial Infarction
Korean Journal of Radiology
;
: 179-184, 2005.
Artigo
em Inglês
| WPRIM
| ID: wpr-181654
ABSTRACT
OBJECTIVE:
To characterize the imaging features on gray-scale and contrast-enhanced color Doppler US images which differentiate renal ischemia from renal infarction. MATERIALS ANDMETHODS:
The segmental renal arteries of eight healthy rabbits were surgically ligated. In four of these rabbits, the ligated renal artery was released 60 minutes after arterial occlusion to cause transient ischemia. In the remaining four rabbits, the arterial ligation was retained to cause a permanent infarction. The gray-scale and contrast-enhanced color Doppler US imaging features of the involved renal parenchyma of both ischemia and infarction groups were compared with respect to the presence or absence of parenchymal swelling, echogenicity changes, tissue loss and perfusion defects.RESULTS:
Parenchyma swelling, echogenic changes, tissue loss and perfusion defects were found to be more extensive in the infarction than the ischemia group. The hyperechoic areas reperfused with blood flow recovered normal echogenicity and perfusion, whereas the hyperechoic areas without reperfusion became renal infarcts.CONCLUSION:
Gray-scale and contrast-enhanced color Doppler US showed that the hyperechoic areas with reperfusion may reverse to normal parenchyma and allow the differentiation of renal ischemia from renal infarction.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Artéria Renal
/
Aumento da Imagem
/
Ultrassonografia Doppler
/
Meios de Contraste
/
Diagnóstico Diferencial
/
Infarto
/
Isquemia
/
Rim
Tipo de estudo:
Estudo diagnóstico
Limite:
Animais
Idioma:
Inglês
Revista:
Korean Journal of Radiology
Ano de publicação:
2005
Tipo de documento:
Artigo
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