Detection of active gastrointestinal hemorrhage with CT angiography: a 4(1/2)-year retrospective review.

Purpose: To retrospectively evaluate the performance of computed tomography (CT) angiography in the detection and localization of clinically active gastrointestinal (GI) hemorrhage of an unknown source.

Materials And Methods: Eighty-six CT angiograms were obtained in 74 patients with the clinical diagnosis of acute GI hemorrhage of an unknown source. Results of CT angiography were recorded, and the patients' electronic medical records were reviewed for documentation of subsequent interventional procedures performed within 24 hours of the reference CT angiogram to diagnose or control ongoing GI hemorrhage.