What are kidney stones and how are they formed? How do I know if I have kidney stones? What treatments are available for kidney stones? What is Extracorporeal Shockwave Lithotripsy (ESWL)? How long does the ESWL procedure take to complete? Once you are in the lithotripsy suite, your urologist and the AKSM technologist will complete the procedure in about 30 minutes. How do I know if I am a candidate for ESWL?