Whats the difference between laser lithotripsy and the ultrasound litho? advantages?

Here are some...: Anything is on its way of constant evolution and change; so is lithotripsy. The key factors affecting how laser or US-lithotripsy lie on the flexibility of involved equipment and the accessibility to kidneys or ureters, & of course, professional proficiency. Considering all possible contributing factors, laser litho has been holding its edge of advantages in treating stones in ureters/kidneys....