An abdominal angiogram is an imaging test that uses X-rays to examine blood vessels in the abdomen. It is performed to check for conditions such as aneurysms, stenosis, blockages, and to evaluate blood flow to abdominal organs like the liver and spleen. Patients are instructed not to eat or drink after midnight before the test and to have someone drive them to and from the hospital, as they will not be allowed to drive after the procedure.