Ultrasound for Abdominal Stab Wounds

The idea here is that some people that suffer the misfortune and inconvenience of being stabbed in the abdomen will require a surgical laparotomy. On the other hand, some will not. We don't want to miss the ones that do, but we don't want the latter to get unnecessary operations. If the wound does not penetrate so deep as to violate the peritoneum then there is low risk of intraabdominal organ injury. Instead of probing and exploring the wound which can be painful, perhaps ultrasound can offer a less invasive way of determining whether or not the peritoneum was violated.