title: Review of pelvic collateral pathways in aorto-iliac occlusive disease: demonstration by CT angiography.
abstract: The pelvic collateral system is a robust network of communicating vessels that provide the functional reserve to withstand chronic aorto-iliac occlusive disease. For establishment of collateral circulation, the afferent vessel must originate proximal to the occlusion and anastomose with vessel/s distal to the occlusion. These collateral pathways can be classified as viscero-systemic, systemic-systemic, and visceral-visceral. CT angiography (CTA) is often the initial modality for evaluating patients with atherosclerotic vascular disease, because it is non-invasive and has been shown to be comparable to conventional angiography. Most collateral pathways are well demonstrated on CTA, which therefore is a useful tool for preoperative planning and regional interventional procedures.
authors.affiliation: Department of Radiology, University of Louisville, Louisville, KY, USA okakin01@louisville.edu.
authors.forename: Olaguoke
authors.initials: O
authors.lastname: Akinwande
authors.affiliation: Department of Radiology, University of Louisville, Louisville, KY, USA.
authors.forename: Aamir
authors.initials: A
authors.lastname: Ahmad
authors.affiliation: School of Medicine, University of Louisville, Louisville, KY, USA.
authors.forename: Shakeeb
authors.initials: S
authors.lastname: Ahmad
authors.affiliation: Department of Radiology, University of Louisville, Louisville, KY, USA.
authors.forename: Douglas
authors.initials: D
authors.lastname: Coldwell
mesh_terms: D001027:Aortography / Q000379:methods*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D003097:Collateral Circulation / Q000502:physiology*; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging*; D010388:Pelvis / Q000098:blood supply* / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods
keywords: CT angiography; Hemodynamics/flow dynamics; aorta; collateral pathway; obstruction/occlusion; pelvis