Fig. 2From: Accuracy of abdominal ultrasound for the diagnosis of pneumoperitoneum in patients with acute abdominal pain: a pilot study a Enhancement of peritoneal stripe (white arrow) and reverberation artifacts (black arrow) detected in the right hypochondrium scan with convex probe in a patient with pneumoperitoneum. b Reverberation with a ring down artifact “comet tails” (white arrow) starting from peritoneum detected in the right hypochondrium scan with linear probe in a patient with pneumoperitoneumBack to article page