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Figure 14. Obstructive hydronephrosis. The first phase (A) shows an enlarged right kidney (on the right hand side of the posterior image) with poor initial cortical uptake and slow filling of a dilated pelvis. The second phase (B) was then started with injection of furosemide 40 mg intravenously. Note that there is negligible clearance from the right renal pelvis visually and on the time activity curve (C). In contrast, the left renal pelvis shows normal drainage even before the diuretic injection.

Figure 14. Obstructive hydronephrosis. The first phase (A) shows an enlarged right kidney (on the right hand side of the posterior image) with poor initial cortical uptake and slow filling of a dilated pelvis. The second phase (B) was then started with injection of furosemide 40 mg intravenously. Note that there is negligible clearance from the right renal pelvis visually and on the time activity curve (C). In contrast, the left renal pelvis shows normal drainage even before the diuretic injection.

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