To maximise detection capabilities, it is crucial that Computed tomography angiography should begin as soon as possible while the patient is actively bleeding. Patients with active Gastrointestinal bleeding are assigned to intensive care units, and patients in shock are promptly resuscitated. Intensive care unit physicians provide appropriate monitoring for hemodynamically unstable patients undergoing Multidetector computed tomography angiography. Multidetector computed tomography angiography should be performed without prior oral administration of water or contrast material. Active contrast material extravasation within the bowel lumen is obscured by oral contrast material, leading to false-negative results.