Figure 3From: Efficacy of retroperitoneal laparoscopic ureterolithotomy for the treatment of large proximal ureteric stones and its impact on renal function Renogram of renal scintigraphy with 99mTc-mercaptoacetyltriglycine. (a) before and (b) 3 months after surgery. The time from peak to 50% activity (T1/2) of this case improved from immeasurable to measurable. Tmax, time until peak activity.Back to article page