ESWL is a radiologic procedure wherein a shock wave is emitted from the machine and passes through the skin, tissues and up to the kidney or its parts where the stone located. The treatment may lasts up to one (1) hour and the stone breaks up/pulverizes and can be passed naturally during urination.

In some cases, more than one (1) treatment may be necessary. Re-treatments are usually performed 2-4 weeks after the first treatment.