“…However, respiratory-induced motion of the kidney was addressed by various concepts as follows: (1) It can be reduced by abdominal compression (AC) using a wide belt. 4,5 (2) Stone tracking was also proposed, that is, the actual target position is automatically detected and the SW focus realigned in real time. 6,7 (3) With SW gating, SWs are only emitted when the target is within the SW focus.…”