How is CT angio in acute abdomen?

● If there is suspicion of active bleeding (GI bleeding that we don't know where). ● Angiography or Angio-CT scan are at the same time: - Diagnostic: to see if there is mesenteric thrombosis, emboli, or bleeding. If there is a place that is bleeding, we can close it or if there is stenosis, we can put a stent. - Treatment: if there is a suspicion of bleeding and we want to do angiography or angio-CT scan or angio-MRI, keep in mind that we have to do it before we do a CT-scan with oral contrast because if we do a CT-scan with oral contrast, we will not be able to see anything with the angiography. (For example to see mesenteric ischemia)