Renal Vein Doppler Sonography in Rabbits with Acute Ureteral Obstruction: Usefulness of Impedance Index of Renal Vein
Journal of the Korean Radiological Society
;
: 369-374, 2004.
Article
in Korean
| WPRIM
| ID: wpr-76498
ABSTRACT
PURPOSE:
To evaluate the usefulness of the impedance index of the renal vein for the diagnosis of acute obstructive uropathy in rabbits. MATERIALS ANDMETHODS:
Ligation of the left ureter was done in 12 rabbits. Doppler sonography of the interlobar veins in both kidneys was checked before and 30 minutes, 1, 3, 6, 9 and 24 hours after ureteral ligation. The venous impedance index [(peak flow signal-least flow signal)/peak flow signal]was compared between the obstructed and non-obstructed kidneys for all periods. The change in the impedance index after ureteral ligation was also compared between the obstructed and non-obstructed kidneys.RESULTS:
A decrease in the impedance index of the intrarenal vein was observed starting from 30 mins after ureteral ligation, and the index remained low up to 24 hours after ureteral ligation. The obstructed kidneys had a significantly lower impedance index than the contralateral kidneys for all six of the postligation measurements (p< 0.05). There were significant differences in the change of impedance index after ureteral ligation between the obstructed and non-obstructed kidneys (p< 0.05).CONCLUSION:
The impedance index of the intrarenal vein was significantly decreased in the obstructed kidneys. The measurement of the impedance index of the intrarenal vein using Doppler sonography could provide a useful method of diagnosing obstructive uropathy.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Renal Veins
/
Ureter
/
Ureteral Obstruction
/
Veins
/
Electric Impedance
/
Diagnosis
/
Kidney
/
Ligation
Type of study:
Diagnostic study
Limits:
Animals
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
2004
Type:
Article
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