Identify the presence of collateral circulation based on normal gastrointestinal tract vascular anatomy. Review how and where most collateral vessels form on abdominal CT scans. Understand the basic principles behind collaterals formation. Use the knowledge of abnormal vessels anatomy to help in the diagnosis-making process of vascular and non-vascular diseases.
Evaluation of the gastrointestinal vascular anatomy is a fundamental part of systematic abdominal CT examinations reading process; however vessels are not given much attention when the scan is performed for a non-vascular hypothesis with a non-angiographic protocol.
routine vascular evaluation might help the radiologist to make the diagnosis and give helpful information to orient possible treatments. Identification and comprehension of collateral vessels networks are especially...
Findings and procedure details
We retrospectively reviewed cases from our institution to illustrate common patterns of collateral circulation and demonstrate how they relate to the background pathology. The purpose of this presentation is to illustrate some patterns of gastrointestinal collateral vessels and show their correlation with basic vascular anatomy. TABLE OF CONTENTS Normal GI tract vascular anatomy - Arterial - Venous - Concept of communicating vessels - Arterial Circulation - Venous Circulation Understanding...
evaluation of collateral circulation is a fundamental of part of the diagnosis-making process. Take-home messages: Collaterals usually arise from already existing communicating vessels in the GI tract and abdomen. The pattern of collaterals are more related to the relative "point of obstruction" than to the background pathology,
butcharacteristic patterns occur and should be recognized. Using this anatomical knowledge can help the radiologist to locate and better understand...
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