Table 1 CT findings in AMI, according to the cause, the time passed from the ischemic event and the presence/absence of reperfusion process
CT findings | AVI | AAI without reperfusion | NOMI without reperfusion | AAI with reperfusion | NOMI with reperfusion |
|---|---|---|---|---|---|
Vessel | Occlusion | Occlusion | No occlusion | Partial occlusion | No occlusion |
Mesentery | Fat stranding | Pale mesentery | Pale mesentery | Fat stranding | Fat stranding |
Mesenteric fluid | Fat stranding, mesenteric fluid and pneumatosis in late phase | Fat stranding, mesenteric fluid and pneumatosis in late phase | Mesenteric fluid | Mesenteric fluid | |
Small bowel | Thickening of the wall (due to vascular congestion and submucosal edema) | Paper-thin appearance of the wall Pneumatosis and absence of contrast enhancement in late phase | Paper-thin appearance of the wall Pneumatosis and absence of contrast enhancement in late phase | Thickening of the wall (due to increased permeability of damaged vessels) | Thickening of the wall (due to increased permeability of damaged vessels) |
Peritoneal cavity | Free peritoneal fluid in late phase | Free peritoneal fluid or air in late phase | Free peritoneal fluid or air in late phase | Free peritoneal fluid since the early phase of reperfusion; the increase of free peritoneal fluid is a sign of worsening | Free peritoneal fluid since the early phase of reperfusion; the increase of free peritoneal fluid is a sign of worsening |