RIGLER'S SIGN
Q.All are signs of pneumoperitoneum
on x ray except
a. Rigler’s(double) sign
b. football or air dome sign
c. ghost-like appearance of
bowel
d. beak sign
ANS :d
Visualization of both the outer and inner walls of a bowel
loop is known as Rigler's sign. The bowel loops then take on a ‘ghost-like’
appearance.
The football sign refers to a large oval radiolucency in the shape of an American
football . The long axis of the “football” runs cephalocaudad, and the blunted
ends are defined by the diaphragm and pelvic floor.
REF :
Adam: Grainger & Allison's Diagnostic Radiology, 5th
ed.
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