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Figure 4: Staghorn calculus in a 47-year-old man with treated lithotripsy. (a) Axial non-contrast computed tomography (CT) obtained prior to lithotripsy shows large right staghorn calculus with hydronephrosis of the upper pole renal calyces. (b) Post-treatment CT scan in soft tissue window settings (400/30) shows reduction in stone burden with residual stone fragments in the renal pelvis. (c) CT image in the bone window settings (1100/300) allows improved distinction of the stone from the ureteral stent

Figure 4: Staghorn calculus in a 47-year-old man with treated lithotripsy. (a) Axial non-contrast computed tomography (CT) obtained prior to lithotripsy shows large right staghorn calculus with hydronephrosis of the upper pole renal calyces. (b) Post-treatment CT scan in soft tissue window settings (400/30) shows reduction in stone burden with residual stone fragments in the renal pelvis. (c) CT image in the bone window settings (1100/300) allows improved distinction of the stone from the ureteral stent