WALL SIGN / RIGLER SIGN /BAS-RELIEF SIGN: Air on both sides of bowel as intraluminal gas and free air outside (usually >1000 ml of gas)
FOOTBALL SIGN: large pneumoperitoneum outlining the entire abdominal cavity; outlined by falciform ligament
TELLTALE TRIANGLE SIGN: triangular air pocket between 3 sides of bowel
INVERTED V SIGN: outline of both lateral umbilical ligament
RUQ GAS:
DOPE’S CAP SIGN: triangular collection of gas in the Morrison’s pouch ( posterior hepatorenal space)
SADDLEBAG / MUSTACHE / CUPOLA SIGN: gas trapped below central tendon of diaphragm
