CT
Axial C+ portal venous phase
Axial C+ delayed phase - prone
Coronal C+ portal venous phase
Sagittal C+ arterial phase
Markedly dilated stomach and proximal duodenum, with an abrupt cut-off at the point at which the superior mesenteric artery (SMA) crosses over the 3rd portion of the duodenum. The downstream small bowel is not dilated.