Journal of Korean Society of Medical Ultrasound 1983;2(1): 31-38.
An ultrasonic study of experimental infected hydronephrosis in rabbit
Byung Ihn Choi, Yun Jeong Yu, Man Chung Han, Chu Wan Kim
Department of Radiology, College of Medicine, Seoul National University
ABSTRACT
Ultrasonography of rabbit kidney was performed after induction of infected hydronephrosis to evaluate the sequential sonographic changes in 15 rabbits. Infected hydronephrosis was induced by ligation of the distal ureter and ureteral inoculation of Escherichia coli. Ultrasonography was performed daily during the first two weeks and weekly during the foolowing 4 weeks after induction of infected hydronephrosis. The results are as follows: 1. The earliest abnormal ultrasonographic findings was appearance of internal echoes in dependent portion of the pelvis, which appeared within 4 days after inoculation in all cases. 2. Degree of internal echoes within the pelvis increased progressively with lapse of time and the entire pelvis was filled with internal echoes within 2 weeks after inoculation in all cases. 3. Echogenecity of internal echoes within the pelvis was similar to that of renal parenchyma in the first week after inoculation, however was weaker than that of renal parenchyma 2 weeks after inoculation in all cases.
Keywords: kidney, US studies
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