1. Imaging in Intestinal Ischemic Disorders
Richard M. Gore, Kiran H. Thakrar, Uday K. Mehta, Jonathan Berlin, Vahid Yaghmai, Geraldine M. Newmark 
Clinical Gastroenterology and Hepatology 
Volume 6, Issue 8, Pages (August 2008)
DOI: /j.cgh
Copyright © 2008 AGA Institute Terms and Conditions

2. Figure 1
Pneumatosis intestinalis on plain abdominal radiograph. Multiple intramural linear lucencies (arrows) are present within the mid–small bowel in this 67-year-old man with a strangulated small-bowel obstruction caused by a ventral hernia. Necrotic bowel was resected at the time of surgery.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

3. Figure 2
SMA stenosis in a 76-year-old man with chronic intestinal angina treated with a vascular stent. (A) Doppler ultrasound analysis shows a markedly increased SMA peak systolic velocity of 3.16 m/s. The waveform also shows spectral broadening. (B) Lateral angiographic image shows deployment of the stent (arrow) through the stenotic portion of the SMA. (C) Sagittal reformatted MDCT image shows the stent at the origin of the SMA (arrow). Note the atherosclerotic calcification of the aorta.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

4. Figure 3
Gadolinium-enhanced MRA in a 79-year-old man with intestinal angina. Sagittal image shows marked atherosclerotic disease of the abdominal aorta and stenosis (arrowhead) of the origin of the celiac artery. The proximal portion of the SMA is completely occluded and reconstitutes distally (arrow) via collaterals from the celiac artery.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

5. Figure 4
Superior mesenteric artery embolism in an 84-year-old-woman who had been in septic shock. (A) Sagittal reformatted image from a CT angiogram shows a low-density thrombus (arrow) within the SMA. (B) Coronal reformatted MDCT shows diminished enhancement of the ileum (arrows) in comparison with the jejunum (arrowheads).
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

6. Figure 5
A 66-year-old woman with ileal ischemia causing ileus and a gasless abdomen caused by fluid flooding the small-bowel lumen. Note the diminished mural enhancement of several ileal segments (arrows) when compared with the jejunum. The lumen of the involved ileal segments is slightly hyperdense (asterisk), indicating intraluminal hemorrhage. There is evidence of ascites adjacent to the liver.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

7. Figure 6
Target sign associated with mesenteric ischemia in 2 different patients. (A) A 28-year old woman with systemic lupus erythematosus and vasculitis developed ileal ischemia. Note the submucosal edema of the affected bowel (arrows). (B) Submucosal edema producing a target appearance (arrows) when viewed en face in this 73-year-old woman with aortic valve vegetations and SMA, splenic, and renal emboli.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

8. Figure 7
Pneumatosis intestinalis caused by small-bowel infarction in an 83-year-old with cardiac arrhythmias. There is intramural gas (arrow) present in several ileal segments. Note the intrahepatic portal venous gas and gas in the mesenteric veins.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

9. Figure 8
Shock bowel caused by nonocclusive mesenteric ischemia. MDCT scan in a 57-year-old man who experienced an episode of cardiac arrest and intraperitoneal hemorrhage shows hyperenhancement (thick arrow) of the small bowel and prominent vasa rectae (thin arrows), the double hit of ischemia and reperfusion injury.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

10. Figure 9
MR of mesenteric and portal vein thrombosis in a 63-year-old woman with a coagulopathy. (A) Coronal contrast-enhanced MR scan of the liver shows low signal intensity within the main portal vein (arrow) and the right portal vein. Note the normal high signal intensity of enhanced blood in one of the patent hepatic veins (arrowhead). (B) This low signal intensity thrombus extends into the superior mesenteric vein (arrow) and its major branches.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

11. Figure 10
Ischemic colitis. There is mural thickening (arrows) of the proximal descending colon in this 64-year-old man who presented with abdominal pain and bloody diarrhea. Note the submucosal edema narrowing the colonic lumen. This appearance is nonspecific and can be seen in acute infection and inflammation as well.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions

12. Figure 11
Cecal infarction in a 63-year-old woman who developed right lower-quadrant pain after cardiac arrest. A CT scan at the level of the right kidney shows linear pneumatosis intestinalis. This patient recovered with conservative management.
Clinical Gastroenterology and Hepatology 2008 6, DOI: ( /j.cgh )
Copyright © 2008 AGA Institute Terms and Conditions