Table 1.

Radiologic signs of ABI

General signs	Stage
	Early	Intermediate	Late
Mucosal hyperenhancement	✓
Target or Halo appearance	✓
Hyperattenuating wall (white pattern)	✓	✓
Mural hypoenhancement (grey pattern)		✓	✓
Thickened bowel wall	✓	✓
Paper thin wall			✓
Gas pattern			✓
Pneumoperitoneum			✓

Etiology-specific signs	Etiology
	Emboli	Thrombosis	Venous	NOMI	Strangulation
Calcification of mesenteric arteries		✓
Completely fluid filled gasless dilated loop			✓
Ascites	✓	✓	✓✓	✓	✓
Smaller SMA and SMV diameter				✓
String of sausage sign (in angiography)				✓
Contrast reflux (in angiography)				✓
Right colon involvement	✓	✓	✓	✓✓	✓
Beak sign					✓
Fat notch sign					✓