Abstract
As one of the minimally invasive therapies of renal and urethral calculi (kidney stones and urethral stones) extracorporeal shock wave lithotripsy (ESWL) is now widely used instead of open surgeries. To ensure the safety of the therapy, it is thought to be important that the stone must be correctly positioned at the focus point of the ESWL instrument. If the positioning is incorrect, normal renal tissues may be harmed. Some of the damage to the tissue (side effects) is reversible, but the rest are irreversible. Hitherto positioning is done before and during the procedure using X-ray or ultrasound. But it is not always effective since the stone in the body changes its position. We noticed that the movement of the calculi 9stones) is caused by breathing. Therefore in this study, suing a special sensor, we tried to detect whether the movement of the chest wall is proportional to the movement of the stone.
