Extracorporeal shockwave lithotripsy (ESWL) is a commonly used procedure for kidney stones and ureters because it is a non-invasive, effective, and first-line therapy of the upper urinary tract. The presence of side effects is still being evaluated in order to reduce the incidence of
both acute and chronic. One of the methods used is the measurement of Resistive Index (RI) in the area of ESWL. To provide a description of the difference in the value of RI in the interlobar artery that is near and distant from the stones at before and after ESWL. There were 15 samples with
clinical kidney stones to be performed with ESWL at IIU and fulfilled inclusion criteria from June to September 2012. Paired sample t-test was conducted to assess the difference of RI value based on the distance of interlobar artery from stones between pre and post ESWL. Sex of the
samples in this study consisted of 66.7% male and 33.3% female with mean age of 45.9±8.4 years (between 32-59 years old) and the highest percentage was 40% in the age range of 40-49 years old. There was a significant difference between the RI value of the area near the stones at pre-ESWL
and an hour post-ESWL. While there was no significant difference between the RI value of the area that was away from the stones at pre and post ESWL. There was a significant difference between RI values based on the distance of interlobaris artery from stones at pre and post ESWL.